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35 Raceway Park

 2014 Sport Mod Rules

Safety see 35 Raceway Park General rules  / Safety
Chassis, Frames and Bodies
UMP/AMRA/TSMA Modified frame and body rules with the following exceptions:
-No coil over shocks
-No spoilers
-No tubular front clips allowed.
-Air shocks not allowed.
-All coil springs must be at least four and one half inches outside diameter. Steel
springs only.
-Canister and/or adjustable shocks are not allowed.                                                                                      

 Bumpers
1. Bumpers should be on both front and rear. Front bumper should be mounted frame end to frame end with the bottom loop parallel to the ground and 6.5″ apart from the top loop. Should be made of minimum of  1 ¼” tubing and must be able to support car if lifted by wrecker.
2. Rear bumper and body must not extend beyond width of rear tires.
3. Nerf bars must not extend beyond width of rear tires and must not contain any sharp edges. Open tubes must be capped.
4. Rear bumper may be constructed of tubing or flat stock, and must protect fuel cell.  Center of bumper, front and rear, must be 18″ from ground. (2″ tolerance). No wider than 5″ past the rear frame rails. Open tubes must be capped.

Roll Cages
1. Must consist of continuous hoops not less than 1.50 inch diameter and must have a wall thickness of at least .095.
2. Must be frame-mounted in at least 6 places. Roll bar padding required in driver compartment.
3. Must consist of a configuration of front to rear hoops connected by tubing on the sides or side  hoops.  Driver’s head should not protrude above the cage with helmet  on and strapped in driver’s  seat.  Roll cage must be securely supported and braced.
4. Low carbon, mild steel tubing is recommended. No brazing or soldering allowed.
5. Protection of feet is mandatory. Bar across back of engines with vertical bars and rub rails, or similar protection.
6. No brace bars forward of cage may be higher than stock put height.
7. A minimum of 3 driver side door bars must be parallel with the ground as possible and located perpendicular to the driver so as to provide maximum protection for driver, but without causing undue difficulty in getting in or out of the vehicle. The sidebars must be welded to the front and rear of the roll cage members. No brazing or soldering allowed. Door bars less than .095 thickness should have 4 bars at least 1-½ inches in diameter.  Driver doorplates required (5″ in front of seat to rear of seat).

Brakes
Brakes must be operated on all 4 wheels and must lock up all 4 wheels during inspection. Brake pedal balance bar only adjusting device allowed on car. No Rear Axle Brake Floater Allowed, Caliper brackets must be solid mounted to the rear-end housing. No pressure limiting or check valves allowed. All frt. brake rotors subject to OEM minimum thickness. Rear rotors .810 minimum thickness
Front must be vented.
Fuel
Gasoline ONLY, no alcohol. Racing fuel is allowed

Weight Rule
2,500 pounds for all cars.

Battery
One 12 volt battery must be securely mounted and shielded inside frame rails.  (Marine type battery box recommended). The (+) cable must be covered. All positive posts must be covered.

 Transmission
1. OEM Manual Transmission. Must use stock cases, bearing plates and tail shaft housings for make and model trans being used. At least 1 forward gear and 1 reverse gear must work. No mini clutches. Cast iron flywheel, no aluminum. 10 and ½ minimum.
2. OEM Automatic Transmission. All forward and reverse gears must be operational at time of inspection. Must have working torque converter. 10 inch minimum

Drive Shaft
Drive shaft hoop is required and must be constructed of at least ¼” by 2″ steel and should be  mounted at least 6″ back from front of drive shaft. Drive shaft must be painted white. 2″minimum diameter steel shaft.

Rear Ends
1. Any passenger car type or truck rear end may be used. Floater recommended 2″ inspection plug recommended to view Spool and/or gear. Carrier may need to be removed if we cannot see what needs to be inspected.
2. No quick-change devices allowed. No cambered rear ends allowed.
3. No limited slip devices allowed. May run full spool, mini spool, or welded rear only.  All Components Must be Steel. No lightened or light weight components allowed.
4. 72″ between back of block and centerline of rear end.
5. Minimum Pan hard bar length 19″ center to center of bolt holes. (2010 23inch rear mounted pan hard bar)
6. One pull bar or lift arm only. (2010 solid pull bar centered over driveshaft)
7. No coil overs no where
8. Non gun-drilled axles.
9. All steel rear end. Except for drive caps on floaters and aluminum spacers for leaf  springs.    No lightweight spools or ring and pinions.

Tires and Wheels
1. 8 inch wheels.
2. No aluminum wheels, hubs, calipers or A-frames or any other suspension parts  allowed. Plastic wheels are not allowed. Calipers cannot be lightened and must be OEM. Rotors cannot be lightened or drilled.
3. Any 8 inch racing tire.

Engine
1. Engine Block-OEM Cast Iron only. Maximum cubic inch limit of 390.
2. Crankshaft-Must have a stock appearing rear crank flange. Balancing OK, No lightening, knife edging or reducing of the crankshaft circumference.. Must be cast iron crank, no steel.
3. Harmonic Balancer-Must be of OEM design with rubber mounted dampener ring (SFI rating recommended)
4. Connecting Rods-Must be of OEM design (IE If stock rod was “I-beam than Aftermarket must be “I-beam). Rod length is up to engine builder (does not have to be OEM length). Rods may use bolt and nut or cap screws to secure the caps.
5. Pistons- Cast or Forged, Flat top or Dished. No domed or gas ported pistons allowed.
6. Camshaft-Hydraulic camshaft only. No roller camshafts allowed. Must pull 15 inches of vacuum at 1000 RPM’s. Must have access to vacuum port in manifold. No 4-7 swaps.
7. Cylinder Heads and Valve Train-Must be unaltered approved OEM. All heads must have been used in a production vehicle. No limited production or special purpose over the counter only heads allowed.  No porting, polishing or unapproved valve bowl work or other alterations of any kind to heads or intake. 202’s allowed.   No screw in studs. No pin studs. Must use stock diameter valve springs. Stock steel stamped rocker arms.  No beehive springs. No stud gridal. No VORTEC heads. Poly locks ok. No canted value (Cleveland style) heads!
8. Exhaust-May use aftermarket headers. Exhaust system must be mounted in such a way as to direct spent gases away from cockpit of vehicle and away from areas of possible fuel spillage. Exhaust header outlets no higher than midline of the body sides. Officials may require turn downs on the collectors. Dual exhaust only  no “Y” pipes or 180 headers. No oxygen sensors allowed.                                                                

9. Intake-Any cast iron or aluminum intake. No porting or enlarging inside of intake or gasket matching. No Bowtie,        VORTEC, SVO or W2, marine or other special production intake manifolds. No intake manifold to cylinder head spacers allowed.
10. Fuel Pump-OEM style diaphragm pumps only.

11.  Carburetor-2 barrel Holley 4412 only. No grinding or polishing of any kind allowed. All carburetor components            manufactured by Holley. No Aftermarket base plates, metering blocks or carb bodies allowed. No milling or  grinding of throttle shaft allowed, shaft must stay round. The choke and air horn may be removed, this is the only re-working allowed, must have stock measurements. Carb gauges will be used.  Steel, aluminum or Phenolic adapter plate or spacer allowed. Distance between the bottom of carburetor and top of intake manifold cannot exceed 1 ¼ inch!  Total spacer height includes gaskets
12. Ignition-OEM Stock appearing Distributors only (all components, even coil cover). Must run stock firing order. No MSD boxes.
13. Cooling System-Cooling system may be modified. Radiator and oil cooler must not protrude above interior. No electric water pumps or cooling fans. No sprinkler systems. Any overflow tubes are to be directed to the ground, between frame rails.
14. Starter-All vehicles must have the capability of starting without being pushed or pulled. Starter must bolt to engine in factory location.

FINALLY..... REMEMBER, THIS IS A DIVISION INTENDED FOR IN EXPENSIVE PARTICIPATION.                                                                                     

         ABUSE OF THESE RULES OR "CREATIVE  INTERPRETATION" TO EXCESS WILL NOT BE   TOLERATED.        

 TRACK OFFICIALS, AS ALWAYS, HAVE THE FINAL SAY AS TO WHETHER OR NOT A CAR WILL COMPETE AND OR PASS INSPECTION.   ANY SIGNIFICANT PERFORMANCE ADVANTAGE WILL BE DEALT WITH ON AN INDIVIDUAL BASIS 35 RACEWAY PARK OFFICIALS RESERVES THE RIGHT TO DETERMINE WHAT CONSTITUTES AN UNFAIR  ADVANTAGE.

 

THESE RULES WILL BE STRICTLY ENFORCED TO THE LETTER. 

SO IF IT DON'T SAY YOU CAN, DON’T