LATE MODEL RULES

 

Option 1
Frame, Chassis & Cage: - Engines & Exhaust: - Safety Requirements:

 

 

Option 2
Frame, Chassis & Cage - Engines & Exhaust: - “BUILT MOTOR OPTION”

 

Option 3
Frame, Chassis & Cage: - Engines & Exhaust: - “BUILT MOTOR OPTION”

 
LATE MODEL RULES 2012

OPTION 1
ACT LEGAL LATE MODEL WITH ZZ4 1ST EDITION GM# 24502609 SPEC MOTOR


Frame, Chassis & Cages:

  1. Tubular frames on all models main frame rail members shall have a minimum of:   
    10 inch perimeter tubing AND .095 wall thickness
    12 inch perimeter tubing
    16 inch perimeter tubing.
    083 wall thickness
  2. 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 wheel base.  Rear clip must extend beyond fuel cell area.        
  3. Main frame rails must be no less than 28 inches outside of rail to centre line of chassis.
  4. Main frame rails and clips may not be pierced or drilled or otherwise altered for the purpose of reducing weight.
  5. Frame and roll cage must be of perimeter design. Maximum off-set allowed is 1 inch from centre line of tread width. All cars required to have a 4 point roll cage constructed of a minimum 1 3/4 diameter, .095 wall tubing. Roll cage must be symmetrical in all directions. Off-set/straight-rail style cars will not be permitted.
  6. 4 curved horizontal door bars on driver’s side required with minimum of 2 vertical bars between each horizontal bar. Minimum height of door bars 22 1/2 inches from bottom of frame rail. Must be constructed of minimum 1 3/4 diameter, .095 wall tubing.
  7. Minimum length of door bars 42 inches.
  8. X bars on right side of cage will be allowed.
  9. Total height of roll cage to be 40 1/2 inches from bottom of frame rail. Halo to be no less than 1 inch lower. Width of halo to be no less than 46 inches from outside to outside of tubing.
  10. Dash bar required, along with an “X” type member across and behind driver.
  11. One piece of tubing running perpendicular between halo in top of cage, centred, is required.
  12. A so called, “Petty Bar” must be present to support right front corner of halo from collapsing in event of a roll over.
  13. Left leg protection bar must be installed between roll cage and left front frame rail.
  14. All main cage structure must be constructed of minimum 1 3/4 tubing .095 wall thickness. Material must be D.O.M. or seamless steel.
  15. Factory production, stock width front frame clip or a fabricated clip (minimum 2x3 .083 tube) are allowed.
  16. Under-slung style rear clip is allowed.

Interior:

  1. Interior of car must be completely enclosed in respect to engine compartment, track surface, tires and rear fuel cell compartment. Interior panels must be a minimum of .040 thickness aluminum or steel.
  2. 20 gauge sheet metal is mandatory 18 inches high at foot firewall, 9 inches high along driver’s tunnel and 18 inches high behind seat.
  3. Right side interior panel may begin beside drivers seat and extend on an angle to the inner edge of the top of the passenger door panel.
  4. A full width dash is required in all cars. Vertical surface of dash must project in a single plane across car. Top horizontal plane of the dash should carry forward to the firewall and enclosed entire area beneath windshield.
  5. Only 1 rear view mirror is allowed.
  6. No Side Mirrors Allowed, unless driver is utilizing an approved Head and Neck Restraint.
  7. Roll bar padding mandatory.

Eligible Bodies:

  1. ABC/Template style body is mandatory.
  2. Bodies that are not ABC are to be template style (eg. Five Star, ARP) and must meet the following criteria. Bodies must be after market made of steel, aluminum or fibreglass. Rubber front and rear bumper covers are recommended. Approved 5 Star/ARP rubber/plastic fenders are recommended.
    NO CARBON FIBER BODY PANELS ALLOWED.
    1. No wedge style, slab side bodies.
    2. No high performance bodies.
    3. No DIRT NOSES
  4. Following Models allowed:
    1. Dodge Charger
    2. Ford Taurus/Fusion
    3. Pontiac Grand Prix
    4. Chevrolet Monte Carlo/Impala SS
    5. Toyota Camry
  5. Bodies must meet Kawartha Speedway Tech visual approval. Weight penalties may be imposed at Tech Director’s discretion for violations. Only approved bodies will be allowed to compete.
  6. Rub Rails are allowed. Must be neat in appearance.
  7. All body panels must be complete in length and width. Overall workmanship shall be a determining factor as to whether a car shall be approved for competition. Specified components’ compliance to templates and over all level of workmanship and appearance will be considered by technical inspectors.
  8. Roof Height will be 47 inches measured from ground to centre of roof 10 inches back from edge of windshield.
  9. Front nose height shall be no less than 4 inches above ground.
  10. Rocker panels shall be no less than 4 inches above ground.
  11. All heights will be measured with driver in car.
  12. Rear spoiler must be made of .090 minimum thickness smooth aluminum or lexan and be a maximum of 60 inches wide and 5 inches high. If ABC body is not used, the maximum height from ground to top of spoiler will be 39 inches. No side enclosures, no lips, or bends in upper portion of spoiler and must be flush to vertical surfaces of deck lid. Spoilers must be non-adjustable.
  13. Hood and trunk must be removable or hinged. If hood is removable, must have at least 4 front pins and 2 rear pins. If hinged, minimum of 4 front pins allowed. If trunk is removable, 4 pins are required, 1 at each corner. If hinged, 2 rear pins will be allowed.
  14. A full dimension windshield is mandatory and must be constructed of 1/8 inch minimum thickness lexan. 2 internal windshield braces spaced at least at 5 inch centres and roughly centred in windshield constructed of minimum 1 inch wide by 1/8 inch thick material are mandatory.
  15. Models with rear 1/4 windows may have openings covered with securely mounted, solid clear lexan. Rear side windows may have approved air vents.
  16. A full dimension rear glass constructed of minimum 1/8 inch thickness lexan is mandatory and must be held securely in place with a minimum of 2 external straps. Back window must be securely braced internally to prevent significant bowing or distortion at racing speed.
  17. Side vent windows will be allowed at the A-Post area only. Vent window will measure no more than 6” in any direction. No other vent type or air deflection devices of any sort will be allowed in door window opening area’s.
  18. 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.
  19. A minimum 24 inch high, 3 inch stroke number is required on the door area on both sides of the 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 head light cover and right tail light covered is required. All numbers must be Kawartha Speedway registered and/or assigned.  Number alterations may be required at any time by Kawartha Speedway to avoid duplication.
  20. If ABC body is used, all heights and measurements must meet criteria laid out in ABC mounting instructions. These will be the dimensions you will be inspected with. ABC body dimensions will vary from those listed above.

Heights:

  1. Frame heights will be a minimum of 4 inches measured at lowest point of chassis to ground.
  2. Engine height will be a minimum of 11 inches measured from centre of crankshaft to ground.
  3. Minimum height of Nose and Rocker Panels shall be no less than 4 inches.
  4. Minimum height of Roof as measured 10 inches back of windshield shall be no less than 47 inches.
  5. Maximum height of Rear Spoiler shall be no greater than 39 inches on body configurations not conforming to ABC body rules.
  6. Fuel cell can will maintain a minimum height of 8 inches from ground.
  7. All heights are measured with driver in car.

Suspension, Steering and Brakes:

  1. All cars will have a minimum wheelbase of 104 ½ inches measured from centre of lower ball joint to centre of rear end housing.
  2. Maximum tread width will be 64 1/2 inches front and rear.
  3. Any type of front steering is allowed. Steering box or rack & pinion are allowed. After market steering components are allowed.
  4. Any type lower control arm assembly allowed.
  5. Tubular upper control arms of any type are allowed.
  6. One shock, one spring per wheel. Any type spring and shock assembly allowed. Shock brand must be KONI, and the following numbers will be permitted: KON30-7436, KON30-7325, KON30-9436, KON30-9325, KON30-7647. Spring Rubbers are allowed.
  7. Bump Stops located within shock shafts or on any part of the suspension, will not be allowed. Chain link devices may be used on front suspension to limit travel.
  8. Any spindle made of steel allowed. Any removable steering arms must be made of steel.
  9. Any racing type hubs made of steel or aluminum are allowed. 5x5 or wide 5 bolt patterns allowed.
  10. Any style front sway bar allowed. Must be mounted on main frame rails of front clip and work off of the lower control arms.
  11. Rear ends must have floating type bearing and hub such as quick change or Ford floater. No cambered rear ends allowed. Rear wheels must be driven with solid flange drive plates. No elastic drive plates allowed. Gun-drilled axles are allowed.  Limited slip or ratchet type differentials of any type are not allowed. NO TITANIUM PARTS ALLOWED.
  12. 3 point type rear suspension mounting allowed. Rear trailing arms may use rubber bushings and/or heim joints. Upper link pivot with heims or rubber bushings only, will be allowed. No fifth coils, no Watts linkage, no torque arms and no mechanical devices to transfer weight while car is in motion. No Spring rods of any type allowed. No Dual Action upper links allowed.
  13. Solid tubular pan hard bar only. One bar, 2 adjustable heim joints only.
  14. Brakes (all 4) must be single piston callipers made of steel and all 4 must be in good working order. Brake rotors must be a minimum of 3/4 inch thick and made of steel. Master cylinders and pedals of any type allowed. No brake re-circulators allowed.

Gear Rule:

Final drive ratio may not be greater than 5.11 

Weight:

  1. All weights include driver (no substitutes).
  2. All cars using KAWARTHA / OTTAWA /ACT / CASTROL Series CRATE MOTOR option will be allowed 56% left side maximum and will maintain a minimum weight of 2850 lbs.
  3. Ballast weight must be securely attached to main frame rail or major cross member structure. No lead shot or liquid type ballast permitted. Ballast to be in blocks of no less than 5 pounds.
  4. There will be NO spent fuel allowance for regular heat races and feature events.
  5. INVITATIONAL EVENTS of 100 laps or greater will give a spent fuel allowance of 75 lbs.
  6. Track scales will be considered final.

Fuel Cells:

  1. Fuel cells mandatory and must be approved by Technical Inspector. Minimum 15 gallon capacity required; maximum 22 gallon. It is mandatory that the fuel cell be enclosed in a 20 gauge, welded steel box with a bolt on cover, constructed of 20 gauge steel. Fuel cell must be protected in back by .095, 1 3/4 O.D. tubing. Check valve vent is required on all fuel cells.
  2. Fender mounted fuel filler (if used) must face to the inside of the track.
  3. Fuel pump must be mechanical. No electric fuel pumps.
  4. Any fuel line passing through interior must be inside steel tubing. No plastic or glass fuel filters.
  5. All cars must have a fully operational fuel shut off valve mounted in the main fuel line. Fuel shut off must be accessible to both driver and safety crews.

Tires and Wheels:

  1. All wheels must be after market racing type wheels made of steel. Wheels will be a maximum width of 8 inches, bead to bead.
  2. Specified track tire mandatory on all 4 wheels.  Tires will be available at track.
  3. A durometer rule will be in effect regarding minimum tire hardness.
  4. Tire relief valves are allowed.
  5. Teams may purchase 6 tires opening night.  1 tire per regular night there after.  For events of 100 laps or more, teams may purchase 4 tires.  For events of 150 laps or more, teams may purchase 6 tires.  26 tires for the season may be entered in your inventory.

     

Transmissions, Clutches and Drive Shafts:

  1. KAWARTHA / OTTAWA / ACT / CASTROL Series CRATE MOTOR OPTION may use the following clutch package: Any Aluminum bell housing and the following Quarter Master part # QUA298103A 7 1/4 ” 2 disc clutch assembly
  2. Starter’s must be operational and mount in stock location. No reverse mount starter’s allowed.
  3. Transmission must be a stock OEM type standard 3 or 4 speed, with all gears working.  Automatics will be allowed with approval from Tech Director.
  4. Shifter may be any type.
  5. Drive shafts must be steel and painted white.
  6. Two drive shaft loops to fully enclose drive shaft are mandatory. Loops must be no less than 1 inch wide and 1/8 inch thick and must be fastened to chassis front and rear.

Engines and Exhaust:

KAWARTHA / OTTAWA / ACT / CASTROL Series
SPEC MOTOR # GM 24502609

This engine must be purchased through the above mentioned tracks or series.

Engine make and body make may be interchanged.

Centerline of engine must remain within 1/2” of centerline of tread width.

Engine must be mounted with foremost spark plug even or ahead of a line projected across upper ball joints.

Engine height will be a minimum of 11 inches as measured from centre of crankshaft to ground.  (with-out driver in car)

  1. CARBEURATOR: 500 CFM 2BBL Holley #4412. Carb adapter and gasket combined thickness must not exceed 1.25 inches. Carb will be subject to GONO GO guage inspection, top and bottom. The only carb spacer’s approved for this motor are the Canton # 85060 and the MOROSO #64964
  2. Spec Motor may run any size header. Headers may be stepped. 180 Headers, Tri-Y, and HOWE Iron Lung Headers are not allowed. Crate motor may run 2 into 1 exhaust muffler system such as HOWE type 5 inch muffler.
  3. Mufflers are mandatory.
  4. Exhaust must exit behind driver outside the body or maybe turned down to exit under the car.
  5. MSD ignition is allowed. The following MSD distributors will be allowed: MSD 85551, 8570, 85561. (The 8570 is recommended) The following Spring and Stop part number is allowed: MSD 8464
  6. The following Roller Rocker Arms will be allowed GM#12367345 or GM Set #12370838 or Scorpion #1035BL.  All rocker arms are 1.5 ratio.

Please contact speedway for information on all crate motors regarding required part number, allowable components, purchase of, sealing of, freshening of and availability. If your motor (built or spec) has been properly sealed by the party approved by Kawartha Speedway, American-Canadian Tour or the Quebec LMS Series CASTROL, and that documentation is verified, you will be legal to compete and not be subject to tear down. This does not make you exempt from any inspection that can be performed with out breaking seals. Nor will it exempt competitors from exchange programs or engine dyno programs deemed necessary by Kawartha Speedway

ANY INCONSITENCIES FOUND WITHIN ANY CRATE MOTOR APPLICATIONS WILL RESULT IN FORFEIT OF ALL POINTS EARNED TO THAT POINT OF SEASON, FORFIET OF MONIES AND POINTS EARNED IN EVENT, AND DISQUALIFICATION FOR REMAINDER OF SEASON. CRATE MOTOR VIOLATIONS WILL NOT BE TOLERATED!!!

Safety Requirements:

  1. All drivers must wear approved safety helmets (minimum Snell 2005 standard). SA rated helmets only. No M rated helmets allowed.
  2. Fire retardant suit is mandatory. Fire retardant gloves are mandatory and fire retardant shoes are highly recommended.
  3. Aluminum racing seat mandatory.
  4. Driver’s seat must appear as close to stock position as possible. Seat must be securely fastened to roll cage and frame members.
  5. Quick release aviation type, minimum 3 inch safety belts required. Shoulder harness must be fastened to roll cage. Belts may be no older than 3 years prior to date of competition.
  6. An approved driver’s window net is mandatory.
  7. It is mandatory that a 21/2 pound fire extinguisher with gauge, aluminum head and steel mounting bracket and be attached to the car’s interior on driver’s right side. Extinguisher must be with in reach of driver and accessible to safety crews from both sides. On board fire system highly recommended.

 

OPTION 2
for
BUILT MOTORS & 400 CRATES

 Items listed in this section are specific to these motor combinations.  For any items not listed here, refer back to OPTION 1.

 

Frame, Chassis & Cages:

REFER TO OPTION 1

Interior:

REFER TO OPTION 1

Eligible Bodies:

REFER TO OPTION 1

Heights:

REFER TO OPTION 1

Suspension, Steering and Brakes:

REFER TO OPTION 1

Gear Rule:

Final drive ratio may not be greater than 5.11


Weight:

  1. All weights include driver (no substitutes).
  2. All cars using a “Built Motor” with a compression ratio up to 10:1 will weigh 8.25 pounds per cubic inch with a minimum weight of 2975 lbs. These cars will be allowed 55% left side max.
  3. Any car with a compression ratio of 10:1 to a maximum to 10.9:1 will carry an extra 50 pounds. (3025 lbs.) These cars will be allowed 55% left side maximum.
  4. All cars using Flamboro / Delaware (88958604) 400 Fast Burn CRATE MOTOR option will maintain a minimum total weight of 2975 lbs.  These cars will be allowed 55% left side maximum
  5. Ballast weight must be securely attached to main frame rail or major cross member structure. No lead shot or liquid type ballast permitted. Ballast to be in blocks of no less than 5 pounds.
  6. There will be NO spent fuel allowance for regular heat races and feature events. INVITATIONAL EVENTS of 100 laps or greater will give a spent fuel allowance of 75 lbs.
  7. Track scales will be considered final.

Fuel Cells:

REFER TO OPTION 1


Tires and Wheels:

 

REFER TO OPTION 1


Transmissions, Clutches & Driveshafts:

  1. All “BUILT MOTORS” may use a stock type replacement Clutch and Flywheel. (Corvette Style or SVO flywheel with minimum weight of 14 pounds). No 10, 000 RPM style. Steel shatterproof bell housing is mandatory. Clutch and pressure plate must be a minimum 10 inch diameter. “Stock Type” pressure plate and clutch disc required.  “BUILT MOTOR” may also utilize a multidisc clutch option (may be no smaller than 5 ½ inches) and carry a 25 lbs. penalty. Steel bell housing must be used.
  2. FLAMBORO /DELAWARE (88958604) CRATE MOTOR OPTION may use any multi- disc clutch assembly not smaller than 5 1/2” and carry a 25 lbs. penalty. Eg. Quarter Master, Tilton.  Steel bell housing must be used.
  3. Starter’s must be operational and mount in stock location. No reverse mount starter’s allowed.
  4. Transmission must be a stock OEM type standard 3 or 4 speed with all gears working. Automatics will be allowed with approval from Tech Director.
  5. Shifter may be any type.
  6. Drive shafts must be steel and painted white.
  7. Two drive shaft loops to fully enclose drive shaft are mandatory. Loops must be no less than 1 inch wide and 1/8 inch thick and must be fastened to chassis front and rear.

Engines and Exhaust:

 FLAMBORO / DELAWARE CRATE MOTOR

 # GM 88958604

This engine may be purchased through any dealership or supplier available, and must retain OEM crate motor ”twist off bolts” to verify engine has not been opened up with out approval of tracks or series. 

Engine make and body make may be interchanged. 

Engine must be mounted with foremost spark plug even or ahead of a line projected across upper ball joints.  Centerline of engine must remain within 1/2” of centerline of tread width. 

Engine height will be a minimum of 11 inches as measured from centre of crankshaft to ground.


“BUILT MOTOR OPTION”

  1. Maximum cubic inch displacement allowed: GM 350, Ford 351, and Chrysler 360. Maximum overbore allowed .060.
  2. Maximum compression ratio 10.5 to 10.9:1.
  3. Bore and Stroke must be factory spec (example: 350 Chev-3.48 stroke x 4 inch bore). No stroked or destroked motors.
  4. Crankshaft: Stock or after market crankshafts will be allowed with a minimum weight of 48 pounds.  No knife-edging or bull nosing of crank.
  5. No dome pistons. Only flat top or dished pistons are allowed. Pistons cannot protrude above the deck of the block.
  6. No aluminum connecting rods or engine blocks.
  7. Any hydraulic or mechanical flat tappet camshafts are allowed. No mushroom or roller camshafts. Must maintain stock diameter lifter and lifter bore for that make and model of engine. No gear drive or belt drive systems.
  8. Roller rockers allowed. Stud girdles allowed. No shaft rockers on Ford or GM.
  9. Cast Iron Cylinder Heads Only. No polishing, coating or porting of heads. No angle plug heads except Ford and Chrysler. DART heads as specified are allowed. Any machine work must be concentric to the valve stem. No relieving about or below the head of the valves. No un-shrouding of the valve pocket. No IRON EAGLE, BOW TIE or VORTEC heads with casting number 292 or W Series heads. SVO head part number 6059L302-GT40 allowed with maximum valve size: intake 1.94, exhaust 1.60. Head dimensions must be stock as produced.

    MOPAR

    1. # P4529269
    2. # P5249574 (Casting # 4448308 unported) Will be allowed

    DART HEADS

    1. Sportsman 2 (straight plug only) casting # 1-307
    2. #4350 casting # 1-052
    3. #4360 casting # 1-052
    4. #4266B and #4267B 
    5. #5302B casting # 1-056 Ford Windsor
    6. #5303 casting # 1-056 Ford Windsor Jr. with maximum valve size of 2.02
  11. The maximum valve sizes as measured across the face of the valve are as follow:

    Model Intake Exhaust
    GM 2.02 1.65
    Ford (Windsor) 1.94 1.65
    Chrysler 2.02  1.65

    Screw-in studs, guide plates, stud girdles, and 3 angle valve jobs are allowed. No titanium valves. Valves must be identical in appearance and construction as OEM valves. Stem diameter must have a minimum of 11/32 inch (.343). Stem may be under cut to a minimum diameter of 5/16 inch (.312) from the valve head to the bottom of the valve guide. Titanium retainers and keepers are allowed.
  12. All intake manifolds must be Edelbrock Performer Series. These manifolds must remain as manufactured. No port matching or flow work permitted. Older design manifolds with same part number are not permitted. Carburetor holes in spacer must be located in centre of intake holes.
    Edelbrock Part #’s: 

    GM # 2102 Chrysler # 2176 Ford #2750 or #2181
  13. CARBEURATOR: 500 CFM 2BBL Holley #4412. Carb adapter and gasket combined thickness must not exceed 1.25 inches. Carb will be subject to GO-NO GO guage inspection, top and bottom.
  14. Headers allowed.
    1. No stepped headers
    2. Header tubing must be a maximum of 1 5/8 inch O.D.
    3. No 180 degree headers allowed. No Iron Lung headers.
    4. Equalizer pipe is allowed.
  15. Mufflers are mandatory. Magnaflow # 11219 is recommended.
  16. 2 into 1 style exhaust system is allowed with maximum 5 inch muffler. Eg. HOWE Style.
  17. Exhaust must exit behind driver outside the body or maybe turned down to exit under the car.
  18. No magnetos allowed.
  19. Electrical system must have a main SHUT OFF SWITCH mounted within reach of the driver and easily accessible for safety crews.
  20. No external oil pumps allowed.

“604 CRATE MOTOR OPTIONS”   ***Exceptions not outlined above***

FLAMBORO /DELAWARE (88958604) 400 Fast Burn

  1. Headers may have a primary tube no bigger than13/4  diameter.                     
    1. Headers may be stepped. 
    2. Maximum size of collector must not be greater than 3 inches.
    3. 180 Headers, Tri-Y, and HOWE Iron Lung Headers are not allowed. 
    4. Crate motor may run 2 into 1 exhaust muffler system such as HOWE type 5 inch muffler.
  2. Crate motor must run 500 cfm Holley two barrel carb. 
    1. As approved by Kawartha Speedway Technical Officials. 
    2. Carb will be subject to GO-NO Go gauges top and bottom.
  3. Crate motor must run a steel bell housing.

Safety Requirements:

REFER TO OPTION 1


OPTION 3
ALLOWANCES FOR FORMER
LIMITED LATE MODEL 

Items listed in this section are specific to these style cars and motor combinations.  For any items not listed here, refer back to OPTION 1.

 

Frame, Chassis and Cages:

REFER TO OPTION 1 for items in sections 1and in sections 3-19

  1. This option is eligible to cars carrying a front frame section constructed of 2 x 4 tubing with an .095 wall thickness, or a car carrying a stock factory production front frame section.  If stock factory front frame section is used, stock front frame rails must extend from in front of steering box rearward and attach to main frame rails.

Eligible Bodies:

REFER TO OPTION 1


Heights:

REFER TO OPTION 1


Suspension, Steering and Brakes:

  1. All cars will have a minimum wheelbase of 104 ½ inches measured from centre of lower ball joint to centre of rear end housing.
  2. Maximum tread width will be 66 inches front and rear.
  3. No Rack & Pinion steering allowed. Stock type steering box required. After market steering components allowed
  4. Lower control arms must be steel and stock type and mounted in stock location. Lower control arms may be fabricated and may be different length’s side to side to achieve desired camber. Measurement from grease fitting to inner mounting point of control arm must have no more than a 1” variance from stock length in either direction. Inner pivots of lower control arms may be rubber bushing, urethane bushing, or steel mono-ball. Ford lower strut arms may use heim joints.
  5. Tubular upper control arms are allowed. Control arm must be steel with the exception of the cross shaft, which may be aluminum.
  6. One shock, one spring per wheel. Any type spring and shock assembly allowed. Shock brand must be KONI, and the following numbers will be permitted: KON30-7436, KON30-7325, KON30-9436, KON30- 9325, KON30-7647
  7. Spindles must be steel and may be fabricated.
  8. Hubs must be stock type. Hubs may be aluminum. Hubs may be 2 piece hub and rotor assemblies. Wheel studs must be a minimum of 5/8”. Hubs may be floater type. 5x5 Hubs only. Wide 5 hubs are not allowed.
  9. Sway bar must be mounted on bottom side of front clip and work off of the lower control arms.
  10. Rear ends may have floating type bearing and hub assemblies. Ford 9” or Quick change rear ends may be used. Axle tubes must be steel. Gun-drilled axles are allowed. Spools may be steel or aluminum. Ford 9” carrier (differential housing) may be aluminum. No cambered rear ends allowed. Rear wheels must be driven with solid flange drive plates. NO TITANIUM PARTS ALLOWED.
  11. 3 point type rear suspension mounting allowed.  Rear trailing arms may use rubber bushings and/or heim joints at mounting points. Upper link pivot with rubber bushings allowed. Any type of spring devices located in trailing arms or upper link will not be permitted. No Dual Action upper links allowed. No fifth coils, no Watts linkage, no torque arms and no mechanical devices to transfer weight while car is in motion.
  12. Solid tubular pan hard bar only. No rubber or spring devices located within bar allowed. One bar, 2 adjustable heim joints only.
  13. Brakes (all 4) must be single piston callipers made of steel and all 4 must be in good working order. Brake rotors must be a minimum of 3/4 inch thick and made of steel. Master cylinders and pedals of any type allowed. No brake fluid re-circulators allowed.
  14. Rack & Pinion steering allowed with 15lbs mounted to each front frame rail.  30 lbs total. 

Gear Rule:

Final drive ratio may not be greater than 5.11


Weight:

  1. All weights include driver (no substitutes).
  2. All cars with “Option 3 Built Motor” with maximum of 10-1 comp. ratio must weigh a minimum of 2900 lbs with a 56% left side maximum
  3. All cars with “Option 3 Crate Motor” (GM 88958602) will weigh a minimum of 2775 lbs. with a 57% left side maximum.
  4. Ballast weight must be securely attached to main frame rail or major cross member structure. No lead shot or liquid type ballast permitted. Ballast to be in blocks of no less than 5 pounds.
  5. There will be NO spent fuel allowance for regular heat races and feature events.
  6. INVITATIONAL EVENTS of 100 laps or greater will give a spent fuel allowance of 75lbs.
  7. Track scales are considered final.

Fuel Cells:

REFER TO OPTION 1


Tires and Wheels

REFER TO OPTION 1


Transmissions, Clutches and Drive Shafts:

  1. OPTION 3 Built Motors may use a stock type replacement Clutch and Flywheel. (Corvette Style or SVO flywheel with minimum weight of 14 pounds).  No 10, 000 RPM style. Steel shatter-proof bell housing is mandatory. Clutch and pressure plate must be a minimum 10 inch diameter. “Stock Type” pressure plate and clutch disc required
  2. OPTION 3 CRATE MOTOR may use the following clutch package: Any Aluminum bell housing and the following Quarter Master part # QUA298103A 7 1/4 ” 2 disc clutch assembly
  3. Starter must be in stock position and functional.
  4. Transmission must be stock OEM unaltered standard 3 or 4 speed with all gears working.
  5. Shifter may be any type.
  6. Drive shafts must be steel and painted white.
  7. Two drive shaft loops to fully enclose drive shaft are mandatory. Loops must be no less than 2 inch wide and 1/4 inch thick and must be fastened to chassis front and rear.

Engines and Exhaust:

Sealed Crate Motor # GM 88958602 will be allowed as OPTION 3 Crate Motor.

Engine make and body make may be interchanged. 

Engine must be mounted with foremost spark plug even or ahead of a line projected across upper ball joints.

Engine height will be a minimum of 11 inches as measured from centre of crankshaft to ground.

“OPTION 3 BUILT MOTOR”

  1. Maximum cubic inch displacement allowed: GM 350, Ford 351, and Chrysler 360.
  2. Maximum overbore allowed is .060.
  3. Maximum compression ratio 10 : 1 on teardown and 10.4 : 1 on the whistler.
  4. Bore and Stroke must be factory spec (example: 350 Chev-3.48 stroke x 4 inch bore). No stroked or destroked motors.
  5. Crankshaft must be stock OEM type only.
  6. No dome pistons. Only flat top or dished pistons are allowed. Pistons cannot protrude above the deck of the block.
  7. No aluminum engine blocks.
  8. Stock type connecting rods only. 6” connecting rods are allowed.
  9. Harmonic balancer must be OEM steel elastomer-type balancer only. No aluminum or fluid damper balancers allowed.
  10. Any hydraulic flat tappet camshafts. No mechanical. No mushroom or roller camshafts. Off-set camshaft key is allowed. Must maintain stock diameter lifter and lifter bore for that make and model of engine. No gear drive or belt-drive systems.
  11. Roller rockers are allowed. 1.5 ratio only. Rockers and push rods to be stock for engine. Screw in studs and guide plates allowed. No stud girdles allowed.  No rev kits allowed.
  12. Stock OEM or World Products Cast Iron Straight Plug Cylinder Heads Only. No polishing, coating or porting of heads. GM angle plug heads are not allowed. GM heads with 292 casting number are not allowed. Vortec heads are not allowed on built motor option. World Products cylinder head part #43600-1, #43610-1, casting #1-052 or Dart SR heads are allowed for GM. Any machine work must be concentric to the valve stem. No relieving about or below the head of the valves. No un-shrouding of the valve pocket.
  13. Maximum intake runner volume for both brands of head is 170 cc.
  14. HEADS:
    GM Max. Valve size In. 1.94- Ex. 1.60
    Ford Cleveland Max. Valve size In 2.04- Ex. 1.65
    Windsor Max. Valve size In. 1.94-  Ex. 1.64
    Chrysler Max. Valve size In. 1.88- Ex. 1.60       
  15. Stainless steel or stock type valves allowed.  No   titanium valves.  No turning of valve stems.  An undercut valve may be used.  Ball method will be used to test valve stem to seat clearance.  Ball size is .787 for intake and .531 for exhaust.
  16. 1.5 rocker arm ratio allowed on Chevrolet engines.  1.6 rocker arm ratio allowed on Ford engines.  Valve springs must be stock diameter.
  17. INTAKE MANIFOLDS:  The following Edelbrock #’s are allowed,       
    i. GM           2101
    ii. Chrysler     2176 
    iii. Cleveland      2750 
    iv. Windsor     2181
    These manifolds must remain as manufactured.  No port matching or flow work permitted.  1st design manifolds with the same part numbers are not permitted.
  18. No external oil pumps allowed.  FORD motors only may run single stage external oil pump.
  19. Battery operated 12 volt ignitions only.  Electrical system must have a MAIN SHUT OFF SWITCH mounted within reach of driver and accessible by safety crews.
  20. Carburetor may be a Holley 600 cfm  4 BBL  Carb adapter and gasket combined thickness must not exceed 1.25 inches.   Carb will be subject to GO-NO GO guage inspection, top and bottom.
  21. OPTION 3 Built Motor Headers:                                          
    a)  No stepped headers  
    b)  Header tubing must be a maximum of 1 5/8 inch OD    
    c)  No 180 degree headers allowed. No Iron Lung headers.
    d)  No TRI-Y Headers
  22. OPTION 3 Crate Motor Headers: 
    a)  Headers may be stepped 
    b)  Header tubing may be any size
    c)  No 180 degree headers. No Iron Lung headers. 
    d)  No TRI-Y Headers
  23. 2 into 1 exhaust muffler systems such as HOWE type 5 inch muffler are allowed.
  24. Mufflers are mandatory.  Exhaust must exit behind driver outside the body or may be turned down to exit under car behind driver.        

“CRATE MOTOR OPTIONS” 

 ***Exceptions not outlined above***

  1. In order to achieve clearance to the race track the Crate Motor (GM 88958602) option may upgrade oil pan to the following:
    CHAMP Pan part# CP100 – 7RB Louvered Tray Pan with no Kick-Out
  2. 6 3/4” Harmonic Balancer Allowed

    ANY INCONSITENCIES FOUND WITHIN ANY CRATE MOTOR APPLICATIONS WILL RESULT IN FORFEIT OF ALL POINTS EARNED TO THAT POINT OF SEASON, FORFIET OF MONIES AND POINTS EARNED IN EVENT, AND DISQUALIFICATION FOR REMAINDER OF SEASON.  CRATE MOTOR VIOLATIONS WILL NOT BE TOLERATED!!!

Safety Requirements:

REFER TO OPTION 1

 

There will be no mixing and matching between options 1, 2 or 3 for the late model division. 

Items outlined within each option must comply with all other items available within each option.

Please note that option 3 is designed to help integrate former limited late models and may be adjusted in the interest of parity as we move forward.




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