2004 LATE MODEL RULES

The Late Model Division at the Waterford Speedbowl will offer competitors options for the 2003 season and beyond. A low-cost spec engine will be available to competitors for use this season. In addition, a new chassis rule will be introduced as an option available for those teams that choose to use the spec engine. The open engine rules are not being phased out. Open rule engines will continue to be available to teams in the future. Likewise, the G Car Chassis cars are not being phased out and will continue to be legal for competition.

The spec engine can be used in cars built under the G Car Chassis rules or in cars built under the New England Late Model/ACT Late Model chassis option rules. Competitors will have the following options:

1. G Car Chassis powered by an open engine rule powerplant.
2. G Car Chassis powered by an ACT Legal Spec Engine.
3. New England Late Model/ACT Late Model chassis powered by an ACT Legal Spec Engine.

Each of these three chassis/engine combinations will have a unique overall weight and left side weight combination. These weights are listed below and in the specific rules for the chassis. These weights are a starting point for set-up work in the offseason only. Once cars with each of the different combinations begin racing these weights may/will be adjusted to bring all three chassis/engine combinations to equality. The staff of the Waterford Speedbowl is committed to taking any steps necessary to achieve equality on the racetrack between all chassis and engine combinations.

Note: All additions to the rulebook are noted herein by Italicized red text.

Every competitor must make himself/herself aware of and familiar with not only the technical rules in this chapter, but also the rules pertaining to safety and officiating in chapter one. By registering as an owner or driver you agree to be knowledgeable and bound by the contents found herein.
3.0) GENERAL DIVISION DESCRIPTION
The Late model division at the Waterford Speedbowl is intended to be a division with stock appearing identifiable cars. The cars are required to utilize a high percentage of OEM standard production parts. There are however exceptions. The exceptions are outlined clearly in these rules. If you come up with a part or subject not covered in these rules do not assume that it can be used or done. For example, if the rules do not state that you can use a turbo charger then you very simply can’t. As far as these rules are concerned there is no such thing as a “gray” area in the rules. Every rule has a specific intention. If you are not sure of that intention then ask before you get caught or waste time and money. If you receive special permission to use or do something not covered in these rules you must get it in writing and it must be signed, dated and shown personally to the Tech. Inspector to be effective

G Car Chassis Rules

3.1) DEFINITION OF “STOCK” OR “OEM”
In the following rules stock, stock OEM or OEM will mean that a part or dimension must be from a standard production vehicle. OEM is the abbreviation for original equipment manufacturer. If parts are to be stock, stock OEM or OEM then they can not be GM Performance, Bow-Tie, Ford Motorsports, SVO, Direct Connection, or any other special off-road or racing parts. No carbon fiber parts anywhere on the car. Absolutely no removal, alteration or covering of casting numbers, part numbers, manufacturer’s name, logos, insignias etc. from any item on the car. To do so will make that part illegal and it will be treated as such.
3.2) APPROVED MODELS
Any 1969 or newer American made rear wheel drive car with at least a 108” wheelbase as factory listed for that year and model only. No Firebirds, Camaros, Mustangs, two passenger sports cars, convertibles, station wagons or using the frames of any of the aforementioned. No alterations to the stock wheelbase length allowed. If you are in doubt about the eligibility of a make or model of car and/or chassis, call before you build it.
3.3) GENERAL CAR BODY
3.3.1 Car Bodies
All bodies must be reasonably neat and stock appearing. All cars must have complete bodies including roof, fenders, rear quarters, doors, hood, trunk lid, front grill/bumper covers and rear enclosures/bumper covers. No openings in rear enclosure/bumper cover. Rear deck may be no higher than 38”. Body may not be wider than rear track width by more than 1” per side, no offset. No part of any body may be closer to the ground than 5” unless noted elsewhere in these rules. All wheel wells and other exposed sheet metal must be rounded under with no sharp edges. All exterior chrome trim, ornaments, outside mirrors and door handles etc. must be removed.
Stock bodied cars must maintain all stock dimensions, angles and material. Stock bodied cars must have a body style that matches the chassis. Stock bodies may be gutted utilizing only the “skin”. All glass, lights and lenses must be removed. All upholstery, dashboard, door panels, headliners, carpeting, floor padding, sound deadening material and rear seat must be removed.
Aftermarket bodied cars must be all steel with the exception of window corner posts, front and rear bumper covers, roof and hood. GM “Metric” chassis may be substituted in Ford and Chrysler aftermarket bodied cars. All window openings must be stock for body style being used.
Below are the only approved aftermarket bodies:
Buick Regal 1982 and later Chevy Berretta 1987-1996
Olds Cutlass 1982 and later Chevy Monte Carlo 1995 and later
Pont. Gr. Prix 1982 and later Chevy Lumina 1989 and later
Ford T-Bird 1983 and later Dodge Avenger 1995 and later
Ford Taurus 1998 and later Dodge Intrepid 2000 and later
Interior of all cars must be completely enclosed with minimum 22 gauge sheet steel. Floor may be fabricated from minimum 22 gauge sheet steel. Floor must extend back at least 85” from the lower ball joints. Floor on right side may be raised no more than 5” above the top of the frame rail. All sheet metal must be neatly trimmed around roll cage tubing.
3.3.2 Weight
Minimum weight is 3000 pounds at all times. Maximum left side weight may not exceed 55.0% of the total weight of the car. All weights will be measured with the driver in the seat, both hands on the steering wheel, right foot on gas pedal, left foot on the brake pedal and driver’s helmet on. Liquids ( gas, oil, water etc. ) or dislodged parts and/or lead weight may not be added after race to meet weight requirements. Added weight must be mounted between the inside edges of the frame rails. No part of the added weight can be lower than the bottom edge of the frame rail at the fore/aft point where it is mounted. Added weight must painted white and labeled with the car number and division. No added weight will be allowed in the driver’s compartment. Lead weight must be encased in steel. Added weight must be mounted with a minimum of two 1/2” bolts.
Lead may be melted and poured in frame rails.
3.3.3 Body Height
Minimum body height at all times will be 48” measured at the roof center line 10” behind windshield opening. No devices that adjust body dimensions from inside the driver’s compartment will be allowed.
3.4) DETAILED BODY REQUIREMENTS
3.4.1) FRAMES
All frame and frame parts must be stock with the exception of the rear cross member. Rear cross member may be replaced with another from the same manufacturer but must remain in stock location. If car is stock bodied, then make of frame must match make of body. If car is aftermarket bodied, then frame must either match make of body or frame must be GM “metric” type. All suspension mounts must remain in the stock location including but not limited to the lower “ A” arm mounts and the rear trailing arm mounts. Upper “A” frame mounts may be fabricated and relocated. Rear spring pockets may be altered for jacking bolts but the spring must remain in the stock location. Rear frame rails from the rear bumper forward to but not past the centerline of the rear axle may be replaced with 2”x 3” x .125” rectangular tubing. Tubing must follow original configuration. Tubing may be run straight back for ease of installation. Uni-body cars may join the sub frame with 2”x 3” x .125” rectangular tubing. No part of the sub frame may be replaced with tubing.
GM Frames: All GM frames must maintain stock OEM wheelbase and be (metric type)
Ford Frames: Ford full-size frames (LTD, Crown Vic) 1979 and newer may be shortened to 108” wheelbase. The frame must be shortened in the center section only.
Chrysler Frames: May use a GM “Metric” Body 108” Frame and install a Chrysler engine in the car.
Rear transmission crossmember may be fabricated using one connecting bar running side to side. Also a plate between engine and blow shield may be used to support transmission.
“X”ing of the chassis is allowed. If chassis is “X”ed, 1-3/4" maximum square or round tubing must be used. Enclosing “C” channel is allowed and recommended. Stock wheelbase must be maintained at all times. Allowable tolerance will be ±-1/2” on both sides.
3.4.2 Spoilers
3.4.3 Front Spoilers / Air Dam
Front spoilers may be made of aluminum, fiberglass, plastic or tin. No part of the front spoiler may be closer to the ground than 5”. Spoiler must reasonably resemble stock spoiler.
3.4.4 Rear Spoiler
Rear spoiler. 1/8” minimum thick is mandatory. The effective spoiler must measure
4”–5”high x at least 48”long. Spoiler may not be wider than car body and it must be centered on the body. Two forward supports may be used but must be made of round material not to exceed 3/8” diameter. Spoiler may not be adjustable from driver’s compartment. Spoiler must be mounted as far back as possible and set at an angle of no less than 45 degrees from level. Maximum rear spoiler height will be 41” from the ground at any time. (See also 3.4.19 Rear Deck and Trunks)
3.4.5 Glass
All glass, glass windows and windshields, lights and lenses must be removed. Head light and tail light openings must be covered. Aluminum, fiberglass or tin may be used.
3.4.6 Windshield
Full front windshield made of 1/8” clear “LEXAN” type material must be used. Windshield must be held in with at least two 1/8” X 1” steel straps both inside and outside equally spaced. Windshield must also be securely fastened to body around the perimeter. Windshield must also be within 3 degrees of stock angle for body style used.
3.4.7 Rear Window
Full rear window made of 1/8” clear “LEXAN” type material must be used. It must be held in with at least two 1/8” X 1” steel straps both inside and outside equally spaced. Rear window must be within 3 degrees of stock angle for body style used. Two 1” holes may be added for jacking bolt adjustments.
3.4.8 Side Windows
Clear rear quarter windows, (no glass), must be used. Window vents may be used in rear quarter windows.
3.4.9 Headlight/Parking Lights
All headlight and tail light openings must be solidly covered. Aluminum may be used.
3.4.10 Rear View Mirror
One mirror no larger than 2” X 10” may be mounted in the center of the windshield. Also one round 3” maximum diameter round mirror may be mounted on the driver’s side roll bar but must not extend outside the body of the car
3.4.11 Dashboard
All cars must have complete dashboard. It may be fabricated and it may be made of aluminum
3.4.12 Fire Walls
3.4.13 Front Fire Wall
Front fire wall will be defined as the vertical wall, (not necessarily 90 degrees to ground level), that runs up from the floor board to the cowl and runs left to right from fender to fender or door to door completely separating the engine compartment from the driver’s compartment. The firewall begins vertically at the first bend upward from the floorboard and ends at the last point of vertical rise. The front firewall may be fabricated with not less than 22 gauge sheet steel. All seams must be welded, not pop riveted, and all holes must be sealed. No part of the firewall may be farther back than 22” from the center of the upper ball joints. Note: Existing rule for firewalls further than 22” from the upper ball joint has been eliminated.
3.4.14 Rear Fire Wall
Rear firewall may be fabricated with sheet steel not less than 22 gauge thick. No aluminum. Driver’s compartment must be completely sealed from the trunk area. Top shelf from front to rear must be at least as wide as stock for body style used. Top shelf must be level and it may not come closer than 16” from the back of the main hoop of the roll cage. From the forward most point of the top shelf, the fire wall must be run down to a point at the back of the main hoop of the roll cage not to exceed 8" up from the frame rail.
Note: Existing car rule has been deleted.
3.4.15 Doors
All doors must be securely fastened by welding or bolting to the front fenders and rear quarters. The are to be no sharp edges that may cut tires. All body styles with factory door posts must have door post on passenger side.
3.4.16 Fenders, Quarter Panels and Rocker Panels
Full front fenders and rear quarter panels are required. Wheel openings may be trimmed only enough for tire clearance. Original opening contour must be followed. Rocker panel area may be no less than 3” from the ground.
3.4.17 Grills
Grills must be used. Grill may be replaced with 1/2” wire mesh screen. Grill frame may be replaced with aluminum or aftermarket fiberglass or rubber replacement parts that maintain stock configuration.
3.4.18 Hoods
Stock, fiberglass or aluminum hoods may be used. Hoods must be stock and/or stock appearing for body style being used. Hoods must be held closed with quick release pins. All hoods must be sealed at firewall. No holes permitted in hood. A non-functioning hood scoop may be used for air cleaner clearance.
3.4.19 Rear Deck and Trunks
The rear deck area and trunk lid must maintain all stock dimensions and material of the body style being used. Rear deck height can be no higher than 36”. Trunk floor must be removed. Trunk lid must be held closed with quick release pins. Aftermarket stock appearing rear bumper cover may be used. Bumper cover must be solid with no holes.
3.4.20 Bumpers
Stock automotive type only. No truck,bus, cab, Volvo, Aluminum, heavy-duty or cow catcher bumpers will be allowed. Front and rear bumpers must be installed in stock location as far as height, width and depth as the stock body style being used. Bumpers will not be reinforced but may be welded to the bumper brackets. Corner brackets will be made of 1” maximum pipe. Body must be attached to the bumper ends to prevent hooking. If aftermarket bumper covers are used then the bumper will consist of two 1-3/4” pipes not more than 1” apart between the frame rails and one 1-3/4” pipe outside of the frame rails, with a maximum of two 1” pipe braces per side. All pipe ends must be capped. The tubing will be behind the cover and not visible from outside the car, and will not extend past the flat surface of the tire.
3.4.21 NERF BARS
External Nerf bars may be used between the wheels only. Nerf bars must be skin tight to the body made of 1” maximum round steel tubing only. Minimum wall thickness is .063”. Maximum wall thickness is .125”. Nerf bars must be fabricated so as not to damage other racecars and are subject to the approval of Waterford Speedbowl Race Officials. Nerf bars bolted through the body will use carriage bolts only.
3.5) GENERAL OPEN ENGINE RULE REQUIREMENTS
Engine must be stock OEM V-8 production block, cylinder heads and exhaust manifolds. All of the above must be made of cast iron only. Chevrolet 350 is the only approved engine for GM cars. Chrysler 340 and 360, Ford 351W or 351C. Original bore and stroke combination must be maintained. No deflashing, abrasive cleaning, deburring, welding, plating ( i.e. chroming ) or coating ( i.e. “Teflon”) on block, heads, intake manifold, exhaust manifolds, crankshaft or any other part of the engine. Absolutely no modifications to any parts unless otherwise specified elsewhere in these rules. Original oil return holes only may be deburred and/or covered with screens or plugs. Epoxying magnets to oil return areas is allowed. No carbon fiber engine parts.
DETAILED OPEN ENGINE REQUIREMENTS
3.5.1 Engine Location
Engine must be mounted in the stock location. Maximum allowable tolerance will be 1/2”
3.5.2 Engine Ground Clearance
Front center of crankshaft must be no less than 13-1/2” from ground at all times. No alteration of crossmember will be allowed
3.5.3 Engine Blocks
Must be stock V-8 cast iron production block with a maximum overbore of .040”, not .041”, .042” etc. Chevrolet 350 is the only approved engine for GM cars. Chrysler 340 or 360 and Ford 351W or 351C. No deflashing, abrasive cleaning, deburring, welding, plating ( i.e. chroming ) or coating
( i.e. “Teflon”) on block. Oil return holes only in block may be deburred
3.5.4 Pistons and Rods
Any flat top piston may be used. No part of the piston may protrude above the top deck of the block. Any steel piston ring and any steel piston pin may be used
OEM stock rods or aftermarket rods that are an exact replacement steel beam rod that are totally stock in appearance, weight and dimensions. Machining for full floating pins is allowed including the addition of bronze bushings. No deburring, deflashing, polishing, abrasive cleaning or lightening. Only normal engine balancing allowed. Chevrolet (maximum Rod Length 6.00") Mopar (Maximum Rod length 6.125") Ford (Maximum Rod Length 6.00"
3.5.5 Oil Pans and Coolers
No dry sumps, external oil pumps, aluminum oil pans, tanks or “Accu-sump” systems allowed. Aftermarket pans with a minimum sump depth of 6-1/2” will be allowed. Windage trays of any type are allowed. No aluminum oil pans. Only OEM type in the pan oil pumps. Oil coolers may be used but can not be visible from the outside of the car and may not be mounted inside the driver’s compartment. Remote Oil filters are permitted
3.5.6 Cylinder Heads
Heads must be stock OEM cast iron only. All combustion chambers must be a minimum of 60 cubic centimeters. When heads are checked, you will be responsible for cleaning and carbon removal. Water will be used to check heads.
-CHEVROLET must use straight plug heads that came with 2.020” or smaller intake valves. Exhaust valves must be no larger than 1.600”.
-CHRYSLER must use heads with P/N 5249574 with 2.020” or smaller intake valves. Exhaust valves must be no larger than 1.600”. No “TA” or “W2” heads will be allowed.
-FORD CLEVELAND must use heads of 2 barrel design that came with 2.050” or smaller intake valves. Exhaust valves must be no larger than 1.660”. Motorsports cast iron head part number M6049-C351 2V with intake valves no larger than 2.050” and exhaust valves no larger than 1.660” may be used.
-FORD WINDSOR must use heads that came with 1.844” or smaller intake valves and exhaust valves no larger than 1.600”. Heads that were manufactured with bosses for A.I.R. may be modified in the following manner. The boss may be removed providing that the outermost 1/2” of the exhaust port has been left untouched. Also, no cut may be within 1/8” of the valve guide. A 1/2” wide strip in the upper center of the runner is all that can be machined.
“Valve job” rule for all heads will be as follows; All cutting and/or grinding must be centered off the centerline of the valve guide. Absolutely no hand grinding or polishing of any part of the head. On the combustion chamber side of the intake seat, no cutting and/or grinding may be larger in diameter than 2.350”. On the combustion chamber side of the exhaust seat, no cutting and/or grinding may be larger in diameter than 1.930”. On the bowl side of the intake and exhaust seats, the maximum angle of cutting and/or grinding will be 90 degrees. No cutting and/or grinding within 1/8” of the bottom of the valve guides.
The following are the only modifications allowed on all heads:
¦ Milling of the head gasket surface.¦ Milling of the intake manifold gasket surface¦ Installation of replaceable type guides or guide liners ¦ Machining the top of guides for seals.¦ Replaceable type guides can be no larger in diameter than .564". The bottom of the guide must also be exactly the same height as the original guide. The bottom of the guide must be cut perpendicular to the valve stem. ¦ Installation of screw-in studs and push rod guide plates.
¦ Enlarging of spring pockets.¦ Installation of replaceable type seat inserts.
The following are modifications that are not allowed on any heads:
¦ Porting, polishing, deflashing or any type of grinding whatsoever on the heads including the port, runner or combustion chamber area. ¦ Chemical milling or deteriorating**¦ Changing the original size of the intake manifold mounting bolt holes.
¦ Interior painting, plating (i.e. chroming) or coating (i.e. "Teflon").¦ Epoxying or welding of any part of the head.
** NOTE: Because of the difficulty in determining that this process has been done, heavy fines and loss of driver and owner points will result at the discretion of the competitor director as recommended by the Tech Inspector.

Valves Stock, stock replacement steel or stock replacement stainless steel valves that meet all OEM specifications for engine being used only. Oversized diameter stems are allowed. No “Pro-flo”, “Tulip” or “Ultra-lite” type valves allowed. Any more than .010” undercut on valve stem will constitute an illegal valve.
Valve Springs and Retainer The valve springs can be no larger than 1.500” outside diameter. Multiple springs are allowed. Steel retainers only, no titanium or aluminum retainers.

3.5.7 Crankshaft
Only stock OEM production crankshafts allowed. Chevrolet must use “large” journal crankshaft. Regrinding of rod and main journals to a maximum of .050" under standard size is allowed. Maximum allowable stroke tolerance will be +/- .015” from factory listed stroke. ( Chevrolet maximum stroke will be 3.495”. ) No aftermarket crankshafts allowed. No knife edge crankshafts. No machining, polishing grinding or any other modifications to any other part of the crankshaft. No painting, coating or plating of any kind. Normal engine balancing will be the only acceptable modification allowed. Normal engine balancing does not include any grinding welding or plating. Aftermarket harmonic balancer may be used. Minimum weight for a steel crankshaft is 52 pounds. Minimum weight for a cast crankshaft is 51 pounds.
3.5.8 Camshaft
No roller or mushroom camshafts. Any steel timing chain allowed. No gear or belt driven camshafts “degreeing" and the use of offset timing bushings and keys are allowed. Maximum lift at the valve with “0” lash will 0.550 in
3.5.10 Rocker Arms
Roller rockers are allowed. No stud girdles. Stock ratio only. Chevy and MOPAR-1.5:1, Ford 1.7:1.
3.5.11 Intake Manifold
Edelbrock # 2101 current design is the only approved Chevrolet intake manifold. Ford 4bbl will use Edelbrock #2665 and 2bbl will use Edelbrock #2750. Ford Windsor will use Edelbrock #2181. Chrysler will use Chrysler P/N P4529116. No porting, polishing, deburring, deflashing, abrasive cleaning, internal painting, coating ( i.e. “Teflon” ), plating ( i.e. chroming ), milling, cutting, drilling holes, enlarging bolt holes, port matching, welding, epoxying or chemical deteriorating allowed. No modifications of any kind !!!
NOTE: Because of the difficulty in determining that any form of chemical deterioration has been done, heavy fines and/or loss of driver and owner points will result at the discretion of the competition director as recommended by the Technical Inspector.
Waterford Speedbowl officials reserve the right to randomly swap intake manifolds among competitors. Failure to swap intake manifold at official’s request will warrant a disqualification.
3.5.12 Carburetor
One Holley #4412 carburetor only. No modifications are allowed except for the following; removing the choke plate and changing the main metering jets, power valve, accelerator pump cam and accelerator pump discharge nozzles. Two throttle return springs must be used at all times.
3.5.13 Carburetor Spacer/ Adapter
One carburetor adapter/spacer a maximum of 1” thick will be allowed. The adapter/spacer may be no larger than 8” x 7”. Top and bottom must be parallel to each other. Port hole or holes must vertical to the top with no beveling, tapering, flaring or radiusing. No additional holes or channels that will allow air to enter the engine. Only one gasket for the top and one gasket for the bottom of the adapter/spacer. Gaskets can be no thicker than .070”.
3.5.14 Air Cleaner/ Filter
One commercially manufactured round air filter element measuring a minimum of 12” to a maximum of 14” outside diameter. Maximum element height is 4”. When mounted, the bottom of the element may be no higher than 1/2” from the air cleaner surface on the carburetor. Spacers may only be used between carburetor and bottom of air cleaner housing. All air that enters engine must pass through the filter element. Top and bottom of air cleaner housing can be no more than 1” larger in diameter than filter element. Air cleaner bottom must have a 5” round opening. No plastic air cleaners or parts. No ducts, baffles or anything else that may control the flow of air to the filter and/or inside the filter. No taping of air cleaner elements. All air cleaners are subject to Speedbowl Official’s approval. K&N type air filter elements or equivalent are permitted.
3.6) ENGINE / CAR ELECTRICAL SYSTEM
3.6.1 Ignition System
Single or dual point battery operated systems allowed. Aftermarket distributor bases allowed with point type ignition only. Stock OEM electronic ignition may be used. Stock 8 lobe cams only. No aftermarket capacitive discharge, MSD or multi-spark systems. Stock firing order for engine must be used. Ignition coil must be of stock dimensions and must fit stock bracket. GM electronic must have the coil in the cap. Any points, cap, rotor, condenser, wires or spark plugs may be used.
3.6.2 Alternator
Alternators may be used but must be from any standard production motor vehicle. No aftermarket alternators. Alternators must be mounted to the front of the engine and driven by a “V” belt only. Aluminum reduction pulley may be used. No serpentine belts.
3.6.3 Starters
Any stock or aftermarket “Super Starter” type starter is allowed. Starter must be mounted in the stock location and must be operational.
3.6.4 Battery
Only one battery. Battery must be mounted inside the frame rails and forward of the rear end. The battery must be installed in a battery box. No part of the battery may be exposed to the driver's compartment. All battery mounts are subject to tech official approval. A clearly marked battery disconnect switch must be positioned within the drivers' reach. The positive battery cable must be located inside of the frame rails."
3.7) ENGINE COOLING SYSTEM
No icing, Freon type chemicals or refrigerants may be used in, on or near car at any time. Only water may be used in cooling system. Water only. No Additives of any kind permitted.
3.7.1 Water Pumps
STEEL OEM pumps only. No electric pumps. Modification of stock impellers will be allowed. Water pump pulleys must be OEM steel. It has become quite a nuisance to find pulley arrangements that will work. Most, if not all, competitors would much rather spend roughly $50-$80 more for the “aftermarket aluminum pulleys” that match. The time and energy spent looking for steel pulleys is more than annoying. The aluminum pulleys are actually heavier and create no performance gain. Water pump pulleys may be reduction aluminum.
3.7.2 Fans
Any fan that was originally designed for automotive use is allowed. Electric fans for the sole purpose of moving air through the radiator are allowed.
3.7.3 Fan Shroud and Duct
Fan shroud can not extend more than 1’ behind fan blade.
3.7.4 Radiator
Aftermarket and/or aluminum radiators allowed. Radiator must be mounted in the stock location. No part of the radiator may be closer than 19” to the upper ball joints. All cars must be equipped with an overflow catch tank . Catch tank must be one gallon minimum capacity and must be mounted in the engine compartment.
3.8) ENGINE EXHAUST SYSTEM
3.8.1 Exhaust HEADERS
Headers are permitted. Headers must be a commercially manufactured header using a steel primary tube size of 1-5/8” outside diameter. Maximum 30” in length, with a collector tube size of 3” outside diameter. The header collector pipe can not be reduced at any point between the primary tube and the exhaust pipe. Primary tubes must exit down and turn to the rear into the collector pipe. Those tubes that do not, must be mounted parallel, angle down, in reference to the cylinder head, then turn down and turn to the rear into the collector pipe. No stainless steel, stepped, or 180 degree headers allowed. No thermal wrap permitted. No spacers between the cylinder heads and headers. Positively no inserts allowed in any part of the header or the collector. No merge or pyramid collectors. No header coatings of any type.
Chevy must use one of the following headers: Dynateck #01-21900, Hedman #68600, Shonefield #185.
Ford and MOPAR must comply with above rule to be legal.
3.8.2 Exhaust Pipes
No “X-ing” of pipe is allowed. No expansion chambers are allowed. Starting at the end of the header, the exhaust may not be larger than 3” diameter in the first 24”. One crossover pipe no larger than 3” diameter may be used anywhere in the first 24”. Starting at a distance no greater than 27” rearward of the header collector, pipes may be no larger than 2-1/2”diameter. Both Pipes may exit the same side of the car. No flattening or oblonging of the pipes is permitted. All pipes must be round. Mufflers must begin between 24” and 27” from the header collector A schematic of the exhaust system is provided at the rear of the Late Model rules section.
3.8.3 Mufflers
Two noise reducing mufflers must be used. One muffler on each exhaust pipe. The only approved muffler for the Late Model division is the Lobak # RCM-25-12-25.or Moroso # 94050 No modifications to the mufflers will be allowed. Mufflers must be installed rearward of the 3” to 2-1/2” reduction referenced in 3.8.2.
3.9) DRIVE TRAIN
3.9.1 Clutch
Stock steel or an exact OEM replacement stock steel pressure plate and steel full face disc for engine type only. Minimum 10" clutch and pressure plate. No drilling, lightening or any other modifications. Aftermarket hydraulic clutch linkage and pedal assembly is allowed. The following weights are minimum allowed for each part:
Flywheel: 12.5 lbs.
Pressure Plate 13 lbs.
Disc 3 lbs.
3.9.2 Flywheel
Stock OEM steel for engine type only. No aluminum. No drilling, lightening or any other modifications. Call Tech. Inspector for special instructions on Chrysler flywheel.
3.9.3 Bell Housing
Only a special production all magnetic steel bell housing can be used. The bell housing must enclose the flywheel 360 degrees with minimum 1/4 inch magnetic steel. Any changes to the bell housing must be made 1/4 inch magnetic steel and welded in place. All welds must be done inside and outside of the bell housing. No bolt on pieces. An opening no larger than 3 1/2 x 4 inches may be used for throw out bearing access. This hole may be covered with sheet metal.
3.9.4 Transmission
Only stock OEM 3 and 4 speed transmissions may be used. All forward and reverse gears must be in working order. The only modification allowed will be the addition of oil seals. All internal parts must be OEM unaltered parts. No machining of any internal parts including gears, shafts and case. No additional or different from OEM bearings. No auxiliary, automatic, over or under drive transmissions. High gear must have a ratio of 1:1 and no other gear may have a ratio closer to 1:1 than 1.20:1. Make of transmission must match make of engine.
3.9.5 Drive Shaft
No aluminum or lightweight driveshafts allowed. Drive shaft must be steel and painted white. Two 1/4” x 2” steel brackets or “hoops” must be placed around the drive shaft. No chains or cables.
3.9.6 Rear Axle Assembly
The rear axle must be a stock OEM passenger car continuous housing between backing plates. Rear axle may be interchanged between car makes and models. The center of the rear axle assembly, measured axle flange to axle flange, must be within 1” of the center line of chassis. Stock lower trailing arms for the chassis being used must attach to the frame in the stock location. Mounting brackets on the axle tube may be altered. Rear axle must have a stock OEM open differential or it may be solidly locked by welding or using a steel spool or a steel mini spool. No Detroit Lockers, ratchet type, OEM posi-lock or limited slip type or any other assemblies. If Ford rear is used in GM chassis, the rear drums may be drilled for GM bolt pattern. No aluminum parts allowed in or on rear axle assembly. Aftermarket racing axle shafts are permitted and highly recommended. Gear rule will be 5.13:1 minimum to 5.57:1 maximum. Floater type rear ends are optional.
3.9.7 Wheels & TIRES
Racing wheels with a maximum size of 8” x 15” are permitted. The bolt flange measured from the axle side must be within 2.5” of the center of the wheel’s bead seat. (Note: A wheel with a 2” back space should have the flange within 2.5” of the wheel’s center). Always check wheels before using. Manufacturer’s tolerances may differ. Standard weight wheels, 19 lbs. minimum only. No lightweight, “spun”, magnesium or aluminum wheels are permitted. Wheel spacers are not allowed. Nitrogen may be used in tires. Wheel spacers are not allowed.
All tires must pass a Durometer test at any time.
The use of “bleed-off” or “pop-off” type valves is not permitted.
The use of tire altering chemicals is forbidden.
No wheels are allowed that do not meet the specifications and tolerances of the Tire and Rim Association. Specifically, “oversized” wheels, which have an increased circumference of the bead flange, are NOT allowed.
See Track Tire Specifications as posted for allowed tires and components and for minimum/maximum allowable tire pressure.
3.10) FRAMES
All frame and frame parts must be stock with the exception of the rear cross member. Rear cross member may be replaced with another from the same manufacturer but must remain in stock location. All suspension mounts must remain in the stock location including but not limited to the lower “A” arm mounts and the rear trailing arm mounts. Upper “A” frame mounts may be fabricated and relocated. Rear spring pockets may be altered for jacking bolts but the spring must remain in the stock location. Rear frame rails from the rear bumper forward to but not past the centerline of the rear axle may be replaced with 2” x 3” x .125” rectangular tubing. Tubing must follow original configuration. Tubing may be run straight back for ease of installation. Uni-body cars may join the sub frame with 2” x 3” x 1/8” rectangular tubing. No part of the sub-frame may be replaced with tubing.
GM Frames: In 2003, all GM frames must maintain stock OEM wheelbase, and the metric G body frame will be the only approved frame.
Ford Frames: Ford full size models (LTD, Crown Vic) 1979 and newer may shorten the frame to 108” wheelbase. The frame must be shortened in the center section only.
Chrysler Frames: May use a GM G body 108” frame and install a Chrysler engine in the car.
3.11) SUSPENSION
Jacking bolts are permitted both front and rear. Springs must remain in stock location. No hydraulic or cockpit adjustable jacking devices. All handles must be removed from jacking bolts before car is moved.
3.11.1 Springs
Stock type, steel racing springs in stock position only. 6” maximum adjustable spring shackles on rear leaf springs. All leafs must be of the same width. Front of rear spring must be in the stock location. No helper springs or traction bars.
3.11.2 Sway /Anti Roll Bars
Both front and rear, if used must be stock OEM unaltered. Bars must be mounted in the stock location. Rubber bushings may be replaced with metal. Link devices may be changed as long as no modifications are made to the bars or the attaching points.
3.11.3 Shock Absorbers
One shock per wheel. Rear shocks must be mounted behind the rear axle. The top of the rear shocks must be mounted between the frame rails. Spherical bearing (Heim) end, aluminum bodied, and gas shocks are permitted. No load leveler, off road, air, multi-adjustable, or externally chargeable gas shocks are allowed.”
3.11.4 FRONT “A” Frames
Lower must be OEM stock and match the chassis being used. Lower must mount in stock original location. Bushings may be changed but cannot be offset. No modifications to stock lower “A” frames except for the addition of threaded sleeves for Chrysler screw-in ball joints. When adding sleeves the center of the ball joint must remain exactly where the original ball joint was. Rubber bushings may be replaced with metal but can not be offset.
Upper “A” frames may be aftermarket or OEM. Aftermarket must have a cross shaft. Aftermarket upper perches are allowed.
3.11.5 TRAILING ARMS
The lower rear trailing arms in the must be stock OEM for chassis being used. The front of the arms must be mounted in the stock location. No modifications to the arms or their forward mounts. Rubber bushings may be replaced with solid metal only, no bearings. No heim ends on trailing arms allowed. Bushings and shafts/bolts can not be offset.
When using a “4” link suspension you may not use a panhard bar or any other lateral control device. Upper links may be replaced with a single link to create a common “3” link suspension. When using a “3” link suspension, the upper link must be made of steel only and may use heim joints and rubber bushings, but no horizontal springs or any other torque absorbing devices. Also with the “3” link suspension one steel panhard bar or other lateral control device made of all steel may be used but must be mounted behind rear axle housing. No aluminum parts on either suspension.
3.11.6 Spindles
Aftermarket or OEM steel spindles. Spindles must match left to right with no offset. Stock rotors must be used. No wide five or G.N. hubs. If OEM spindles are used:
Steering arm may be cut, bent and/or welded. Cut and/or welded arms must pass a safety inspection. Upper and lower ball joint holes may be reamed to accept Chrysler ball joints. If 1970-1981 Camaro or 1973-1977 Monte Carlo spindles or their exact dimensional equivalent are used, then an aftermarket adjustable ball joint may be used both upper and lower.
3.11.7 Tread Width
The tread width will be measured from outside tire bulge to bulge at wheel center height. Maximum tread width will be 76”. Wheel spacers are not allowed.
3.11.8 Ground Clearance
At all times, no part of the frame rails or body may be lower than 5” from the ground. Body between front and rear wheels may be no lower than 3” from the ground. No bars may protrude through the sheet metal for jacking purposes. Center of crankshaft must maintain a 13-1/2” ground clearance. If it has been determined by the officials that any or all tires are leaking air or have been tampered with then the heights will be measured with the following air pressures:
LF-15 lbs., LR-15lbs, RF-30lbs, RR-25 lbs.
3.12) STEERING COMPONENTS
Steering box must be OEM only. Power steering pump must be from a standard production car. No rack and pinion steering. “Heim” joints may be used at the outer tie rod ends only. Steering box quickeners may be used. Bump steer studs that fit OEM tie rod ends may be used. Collapsible steering shaft is recommended. If collapsible shaft is not used then the shaft must be made with at least two universal joints and installed in way that upon a heavy front end collision the shaft will deflect to the side rather than straight back.
An approved steel quick release steering wheel coupler is recommended. The center of the steering wheel must be padded with a commercially manufactured pad made specifically for that purpose.
3.13) BRAKES
Disc brakes allowed on all four wheels. All rotors and calipers must be OEM or stock replacement. No aluminum calipers. Aftermarket master cylinder(s) and aftermarket pedal assembly may be used. IF OEM master is used, it must be dual reservoir. Adjustable brake proportioning valves may be used. No drilling or lightening of rotors, drums or calipers. Brake pads and shoes may be aftermarket.
3.14) FUEL
3.14.1 Definition
The word “Fuel” whenever used in this document shall be understood to mean automotive gasoline which complies with the specifications given in section.
3.14.2 Fuel Specifications
A. The fuel shall be automotive gasoline only.
B. Gasoline is defined for purposes of this rulebook as a mixture of hydrocarbons only. Nonhydrocarbons which do not increase the specific gravity of the gasoline are allowed only to the extent they do not exceed 0.15% by volume and are blended in the gasoline by the refiner or the manufacturer.
C. Gasoline is a good electrical insulator, or Dielectric, and its relative effectiveness as an insulator is represented by its Dielectric Constant. The average D.C. for the hydrocarbons which comprise gasoline is 2.025. This is defined as a reading of “0” with the gasoline certification meter.
D. The standard for fuels at the Waterford Speedbowl shall be SUNOCO PURPLE or SUNOCO SUPREME. The use of unleaded fuels is not permitted.
E. The gasoline shall not be blended with alcohols, ethers, or other Oxygenates, and it shall not be blended with propylene oxide, aniline or its derivatives, nitro compounds, or other nitrogen containing compounds.
F. No icing or cooling of the fuel system is permitted in the garage, pit, or racing area.
G. Gasoline may be tested and certified at any event through the application of various chemical analyses as considered appropriate by officials. Gasoline may be checked before, during, and after the racing events.
3.15) FUEL SYSTEM
All fuel systems are subject to Speedbowl Officials approval.
3.15.1 Fuel Cell
An approved fuel cell with a maximum capacity of 22 gallons must be used at all times. Cell must be encased in sheet steel no thinner than 22 gauge. The fuel cell mounting cage is pictured on at the following the text of this section. This structure should be built separately and then fitted to car in accordance with all other rules. Use of this cage is mandatory. Cell must be mounted as far forward as possible and must be centered between the frame rails. Bottom of cell must be no less than 8” from the ground at all times. No external filler necks. The fuel cell cap must be painted white with the car number on it for identification.
3.15.2 Fuel Cell Vent
One 1” maximum vent to the outside of the left rear tail light panel must be used. A fuel vent flap valve is recommended. A fuel cell vent check valve must be used.
3.15.3 Fuel Lines and Pump
No electrical devices in trunk compartment.
3.15.4 Fuel Lines
Only one fuel line from the fuel cell to the fuel pump. The fuel line must run beneath the floor and must have a clearly marked mechanical shut-off valve within the driver’s reach. The fuel line may not exceed 1/2” inside diameter.
3.15.5 Fuel Pump
One mechanical stock type fuel pump mounted in the stock location. No electric fuel pumps.
3.16) EQUIPMENT AND GENERAL ACCESSORIES
3.16.1 Roll Bars
Four point cage type roll bars shall be made from a minimum of 1-3/4” x .095” approved steel tubing. Base of uprights shall be welded to the frame rails. No part of the main hoop may extend more than 3” behind door striker plate. For GM 108” wheelbase frames regardless of body, no part of the main hoop may be more than 83-1/2” behind the center of the front lower ball joints. Main hoop will be connected side to side with a bar just above the floor pan. Top of cage may be no lower than 39” from the top of frame rail. The front leg bars and main hoop must be connected by four horizontal door bars equally spaced. All door bars must be convex in shape with at least 2 bends. Top of uppermost door bars must be no less than 19” from top of frame rail. Door bars must have six vertical studs per side equally spaced front to rear. Two angular studs must connect the bottom door bar to the frame rail. Wing window bars are mandatory. Ear or “Danbury” bar is recommended but may not protrude out of the window. A front hoop is allowed but must be behind grill and not visible from outside of the car. Front hoop can be no lower than top of valve covers. Rear hoop is mandatory behind fuel cell. Also a bar running side to side behind fuel cell and below frame rail is mandatory. It must be run 1”-2” below fuel cell.
3.16.2 Accessories
3.16.3 MANDATORY!!! Every car must have a spotter monitoring race control by way of scanner or radio. ALL Spotters will be located in a central area provided by Waterford Speedbowl Officials with 2-way radio communication to their car. Each spotter will be identifiable as to which car they are spotting for. Failure to monitor and obey radio direction will result in removal from the race.
3.16.4 No on-board computers, automated electronics, recording devices or digital readout gauges will be permitted during any race. “Tell-Tale”type tachometers are the only normal exception to this rule.

G CAR LATE MODEL ROLL CAGE DIAGRAMS

G CAR LATE MODEL ROLL CAGE DIAGRAMS

G CAR FUEL CELL CONFIGURATION

G CAR LATE MODEL FIREWALL CONFIGURATION

2003 Waterford Speedbowl
New England Late Model/ACT Late Model
Appendix

1. Frames, Chassis, and Cages
A. All cars will have minimum 104.5" and 105.5" maximum wheelbase, measured from center of lower ball joint to center of rear end, with a maximum tread width of 64.5". Tread width to be measured with Waterford Speedbowl tread width gauge. Tubular frames on all models main frame rail members shall have a minimum of:
10 inch perimeter tubing .120 wall thickness
12 inch perimeter tubing .095 wall thickness
16 inch perimeter tubing .083 wall thickness

Sections extending such as front and rear clips must be a minimum of 10 inches in perimeter and have a minimum of .083" wall thickness and extend 10 inches minimum beyond wheelbase. Rear clip must extend beyond fuel cell area. V-8 engines only and must be placed with center of number one spark plug or center of hex if angle fitted even with center of grease fittings on upper ball joints. Centerline of engine must remain within 2" of centerline of tread width.

B. Specifications for Perimeter Rollcage: Maximum offset allowed 1" from center line of tread width. No offset chassis allowed.

Material to be used must be DOM or seamless, .090 minimum wall steel tubing. All cars required to have a 4 point or main structure of the rollcage must be symmetrical in all directions. Minimum length for door bars is 42 inches. Total height of rollcage to be 40-1/2" from bottom of frame. Halo to be no less than 1" lower. Width of halo to be no less than 46 inches outside to outside of tubing. Dashbar required, along with an X-type member across and behind driver. One piece of tubing running diagonally or perpendicular between halo in top of cage centered is required. Four curved horizontal door bars on driver's side with minimum of eight (8) inches to edge of seat from inside of door bars required. Minimum height of door bars 22-1/2 inches from bottom of frame. Passenger side three curved door bars with minimum 66 inches between driver's side door bars and passenger side door bars, outside to outside. A so-called "Petty bar" must run from center of cage to upper right front halo.
C. 18 gauge steel minimum 18 inches high foot firewall. 9 inch high driver's tunnel and 18 inch high behind seat.

A "Red Mead" bar is mandatory under driver's seat (see diagram below). A foot safety bar is mandatory. A support for headrest or seat back extending to support back of head is mandatory. Splash guard is required behind head and shoulders.

2. Interior Detail
A. A full width dash is required in all cars. Vertical surface of dash must project in a single plane across the car. Top horizontal plane of the dash should carry forward to the firewall and enclose entire area beneath windshield. Instruments must be neatly mounted to vertical plane of dash panel.

B. Interior of car must be completely enclosed in respect to engine compartment, track surface, tires and rear fuel cell compartment. Interior panels must be minimum of .040 inch thickness of aluminum or steel.

C. Right side floor pan may be level with transmission height or drop back down level with floor on driver's side.

D. Only one rear view mirror inside car approved. No side mirrors.

E. No rub rails allowed outside car.

3. Eligible Bodies
A. Bodies must be aftermarket made of steel or aluminum with rubber front and rear bumpers, fiberglass hoods and window frames. Approved Five Star rubber fenders are allowed when available for make and model. Plastic roof panels are optional. WATERFORD SPEEDBOWL approved bodies only. Bodies must meet tech visual approval -- weight penalties may be imposed at tech director's discretion for violations. No mixing and matching of body panels.

B. Models as follows:
Dodge Intrepid
Oldsmobile Cutlass
Pontiac Grand Prix
Ford Taurus
Chevrolet Monte Carlo

Any variations need tech approval and may carry penalties.

C. Entire front fenders and vertical sides of nose panels must be free for decals for Waterford Speedbowl participating contingency award companies.

D. All body panels must be complete in length and width, nose panel may be narrowed maximum of 4 inches. Overall workmanship shall be a determining factor as to whether a car shall be approved for competition. Specified components' compliance to templates and overall level of workmanship and appearance will be considered by technical inspectors.

E. Spoilers must be made of .090 minimum thickness smooth aluminum with maximum width of 60 inches wide and 5 inches high. Maximum height from ground to top of spoiler of 38 inches. No side enclosures, no lips or bends in upper portion of spoiler and must be flush to vertical surfaces of deck lid.

F. Hoods and trunks must be hinged. Hoods must have four positive locking pins on leading edge. Trunks must have two positive locking pins.

G. Absolutely no additional holes, vents, etc., may be added to body components outside stock configuration. Exhaust holes may be cut. Exhaust may exit under car, or out side of car. If exhaust exits under car, must point toward race track and maintain 4" ground clearance. Vents may be installed for front brakes only.

H. A full stock dimension windshield is mandatory and must be constructed of 1/8th inch minimum thickness lexan. Three internal windshield braces spaced at least on 5 inch centers and roughly centered upon windshield constructed of minimum 1 inch wide by 1/8 inch thick material are mandatory.

I. Models with rear quarter windows may have stock openings covered with securely mounted solid, clear lexan. Rear side window may have approved air vents for driver. "A" pillar windows not to exceed 6" in any direction measured from front of door opening. No interior air deflectors allowed.

J. A full dimension rear glass constructed of minimum 1/8th inch thick clear lexan is mandatory and must be held securely in place by minimum of 2 external straps. Back window must be securely braced internally to prevent significant bowing or distortion at racing speed.

K. A quality paint job is mandatory on all cars with high contrast numbers for legibility day or night. Bodies must be kept neat and painted at all times. No metallic numbers.

L. A minimum 24 inch high, 3 inch stroke number is required on the door area on both sides of car. A minimum of 30 inch high, 3 inch stroke number is required on top of roof facing the passenger side of car. A block style number on right headlight cover, taillight cover and upper right (passenger side) of front windshield required. All numbers must be WATERFORD SPEEDBOWL registered and/or assigned. Number alterations may be required at any time by WATERFORD SPEEDBOWL to avoid duplication.

M. Minimum ground clearance of any component is 4 inches including bumper, bumper covers, and side skirts.

4. Weights
A. All cars will be weighed with drivers (no substitutes) and must have a maximum 56.0% of total weight on left side. All heights will be measured with driver in car, including after heats and features unless otherwise notified.
Cars using built and racing under this chassis rule must be powered by an ACT Legal Spec Engine. The total weight must be a minimum of 2950 lbs.

5. Heights
A. Four (4) inch frame height measured at the lowest point including cross members. 47 inch roof height measured 10 inches back from windshield to ground. 11 inch engine height measured from center of crank front to ground. Skid plate is mandatory if oil pan is below cross member. Fuel cell can minimum height 8 inches from ground.

B. All heights measured with driver (no substitutes) in car.

6. Fuel and Fuel Systems
A. A stock 4412 Holley 500 CFM carburetor only is allowed. Absolutely no material may be added or removed from carb, except bolt-on choke mechanism only may be removed. No carb hats or air deflecting devices allowed. Air filter housing and fresh air box only. WATERFORD SPEEDBOWL Officials may interchange carburetors at any time.

B. Fuel must not mix with water and must be approved by track officials.

C. Fuel cells mandatory and must be approved by technical inspector. Minimum 15 gallon capacity required. It is mandatory that the fuel cell be enclosed in a 20 gauge welded steel box, with a bolt-on cover constructed of twenty gauge steel and must be protected in back and on sides by .095 1-3/4" O.D. tubing. Fuel cell must be centered between frame rails.

D. Any fuel line passing through interior must be inside of steel tubing.

E. Check valve vent is required on all fuel cells.

F. Fuel pump must be mechanical -- no electric fuel pumps.

7. Suspension, Steering and Brakes
A. Any type of front steering allowed. Steering box or rack and pinion are allowed. Power steering pumps must be driven from the front of motor by belts. Steering columns must have minimum of two U-joints.

B. Any spindle made of steel. Removable steering arms must be made of steel. Spindles must be same offset left to right.

C. Any stock or aftermarket upper and lower control arms allowed. Lower control arms must be same length left and right. Heim joints are allowed. Measurement will be from center of mounting point to center of ball joint at grease fitting. Jacking bolts allowed, only one shock per wheel. Shock value not to exceed $160.00 original manufacturers suggested racer price. Stock appearing sway bar only (one solid bar side to side). MUST be mounted on bottom side of front clip B work off the lower A-frames, with NO heim joints. NO rear sway bars allowed.

D. All springs must be 5" nominal diameter, if not running coil over, and must be made of steel-magnet must stick to spring. Coil-overs permitted as an option. (NOTE: Item C above shock value limits). Spring rubbers will be allowed, must be wired in place.

E. Any safety or racing type hubs allowed made of steel or aluminum. 5x5 or wide 5 bolt patterns allowed. Front brake rotors must be a minimum of 1 inch thick and made of steel. Rear brake rotors must be minimum 3/4 inch and made of steel.

F. Rear ends must have floating type bearing and hub such as quick change or floater. No cambered rear ends allowed. Must be driven with solid flange drive plates. All running gear drainage plugs must be safety wired.

G. Truck arm or three point type rear mounting allowed. Rear trailing arms may use rubber bushings and heim joints. No spring rods. Rubber Snubber allowed on right rear trailing link. Upper link pivot with rubber bushings allowed.

H. Solid tubular panhard bar only. One bar, two adjustable heim joints only.

I. No aluminum truck arms, no fifth coils, no Watts linkage, no torque arms, no mechanical devices to transfer weight while car is in motion allowed.

J. Ballast weight must be securely attached to main frame rail or major cross member structure. No lead shot or liquid type ballast permitted. Additional brackets or weight holders beyond main frame rails must be approved by technical committee and may require modification or elimination upon inspection.

K. Rear ends may be locked or open. Refer to stock transmission rule #9A. No gold tracks or any type of ratchet or limited slip. Driveshafts must be made of steel, and must be painted white. A gear rule may be enforced once gearing requirements are established.

L. Brakes (all four) must be single piston calipers made of steel and all four must be in good working order. Master cylinders and pedals of any type allowed. Brakes will be tested. No brake returns or coolers allowed.

8. Transmissions/Clutches

A. Transmissions must be stock standard 3 speed for make and model, no automatics allowed. Steel type bell housing mandatory. Mandatory bell housing must remain 3600 and shall not be altered, except for inspection hole not to exceed 2" in diameter to be drilled in bottom of bell housing.

B. Stock iron flywheel assembly 10.4 clutch disk only. One clutch disc, one pressure plate only allowed (Hayes or equivalent aftermarket stock-appearing components). No lightening of pressure plate or disc. No aluminum pressure plates allowed must be completely steel. Inspection hole must be drilled in bottom of bell housing unit for inspection viewing. Flywheel must weigh minimum of 20 lbs, except Spec Motor flywheel must weigh minimum 16 lbs. Chrysler/Dodge brand must have mandatory 20 lb. stock flywheel and must use a 10.5 clutch disc.

C. Shifter may be any type - single or two rod.

9. Safety Requirements

A. All cars must have safety cutoff switch on driver's right side crossbar. Must be within reach of driver and accessible to safety crews from both left and right side.

B. Aluminum racing seat mandatory. Driver's seat must appear as close to stock position as possible and must be securely fastened (bolted, not tack welded), to rollcage and frame members and not to floorboards.

C. Quick release aviation-type minimum 3" safety belts required. Shoulder harness required to be fastened to rollcage, not in gussets, no cam-lock type allowed.

D. Rollbars must be padded in driver's area. Center of steering wheel must be padded.

E. Two drive shaft loops to fully enclose drive shafts mandatory, no less than 1" wide and 1/8" thick must be placed around drive shaft front and rear to the floor or cross member.

F. No traction control devices will be allowed.

G. Batteries will not be in driver's compartment or fuel cell area and must be fastened securely.

2003 LATE MODEL SPEC ENGINE APPENDIX

Technical Information:
All spec engines for use at the Waterford Speedbowl must be purchased through either the Waterford Speedbowl or the ACT Office in Barre, VT. Only engines prepared and sealed by the ACT/Waterford Speedbowl engine builder can be used in competition. Used ACT Legal engines can be used in competition as long as they are still sealed and unaltered. If the original seals have been broken or altered, or, if in the opinion of the Waterford Speedbowl technical staff there is a question concerning compliance with the sealed engine requirements, the engine must go back to the ACT/Waterford Speedbowl certified engine builder for examination, certification and to be resealed. Only ACT approved seals will be recognized by the Waterford Speedbowl.

The spec engine is delivered complete except the flywheel and the carburetor with spacer. Spec engines come with a Racemate 22 amp alternator/waterpump unit. This can be optioned off at the time of order for credit.

DO NOT TAKE MOTOR TO OTHER BUILDER UNDER ANY CONDITIONS.
Contact the Waterford Speedbowl with any minor problems (example: pan leak, etc.) for coordinated remedy or repair. All engine work to be done on spec engines must be coordinated through the Waterford Speedbowl office or the ACT office. Freshening of spec engines will be completed by ACT authorized engine builder only.

Carburetor
See Section 6, Fuel and Fuel Systems.

Carburetor Spacer
The only allowed carburetor spacer is the Canton #85060.

Distributor and MSD
Stock OEM HEI distributor only on spec engine. 6200 RPM MAXIMUM on spec engines. MSD #6AL6420 with 6200 RPM rev limiter chip optional, with OEM HEI distributor. MSD distributor are NOT allowed in the Waterford Speedbowl Spec Motor.

Headers and Mufflers Allowed
No 180-degree headers allowed. All 4 tubes from right and left banks of engine must enter single collector on each respective side of exhaust. No balance tubes allowed. Must be made of mild steel, no stainless. Two mufflers required. Must be Howe #3002 mufflers and steel pipe used to extend beyond driver seat, and may not be cut or modified and MUST BE installed in correct flow direction. Exhaust pipe exit maximum size 3-1/2 inches. No scavenger systems.

Cooling Systems
Any radiator allowed with catch tank. Overflow must blow on right lower quarter of windshield. Spec motors may run electric fans or mechanical stock fan blades, fan blades are recommended. It is very important to close in radiator to maximize cooling with no air leaks. Stock cast water pump or aluminum pumps allowed. Oil coolers allowed.

Alternator
Alternator must be in working order.

New England Late Model/ACT Late Model Chassis Diagrams

G CAR LATE MODEL ROLL CAGE DIAGRAMS

G CAR LATE MODEL ROLL CAGE DIAGRAMS