Bodies and Frames

1. Frame must be 1970 or newer. Ford, Dodge, GM, on factory wheel base only. Dodge or Ford may run Metric frame or GM frame.
2. Must be full original frame from front or idler arm and front of steering box to top of rear end.
3. Frame must remain stock across rear and across front.
4. Weight jacks allowed on both front and rear springs .
5. Body may be aftermarket steel, but must look like body being used. Camero, Monte Carlo, Ford , Dodge etc. Roof must be completely stock size for body to be run, fiberglass roof okay. No wedge bodies will be allowed. After market upper control arms will be permitted however, there can be no modification to the lower "A" frames.
6. Passenger side of car can be boxed in to driver or center of car.

Body Measurements

1. Front fender must be at least 33" to top from ground. No Bubbles. Door opening 13" front to 14.5" back minimum. Roof height no lower than 51". Rear quarter 34" to 37" max. front guard. Rear spoiler max 7".
2. Body must be no wider than 70" or narrower than 68"
3. Rear and front bumper may be manufactured of 2x2 or 2x3 or round tubing. All ends must be capped and extend no further than 5" past frame rails. Front bumper must be behind nose piece.
4. Rear of car must be enclosed from top of bumper to bottom of trunk.

Wheelbase

1. Cannot be altered from frames being used, etc. 110, 108.
2. May reinforce with plate or tubing if using uni-body car. Front and rear frame members must be tied together.

Tires and Rims

1. 10" maximum racing tire; Tires are Hoosier RC-4 only. No grooving, softening, or sniping of tires allowed.
2. Rims must be maximum of 10". Two inch offset maximum, steel rims only, no home made rims. May run beadlock on right rear only. No home made bead locks.
3. 1/2" or larger studs and 1" lug nut mandatory on all four wheels
4. No tire soaking/and or treating in any class. Any driver/owner/crew member found to have used, or brought, any tire soaking chemicals onto SRW property will be asked to leave the property and will be subject to fine and or suspension.

Suspension

1. Unless specified, all parts must be completely stock for car being run. Cannot alter any stock parts, except rear upper trailing arms for pinion angle. Pinion angle may be a maximum of 7 degrees. May change spring rates. Safety hubs are recommended. .
2. Outboard shocks OK One per wheel, no other shocks allowed on car. No air shocks or booster springs allowed.
3. Brakes mandatory on 3 wheels.
4. 3 link rear end ok, lower trailing arms will mount in stock frame location and be the same length + or - 1/2 inch. rear springs must be min. 5 inch diameter and mount on top of rearend.NO COILOVERS. NO 5th COILS. Aftermarket steel trailing arms ok. 100 lb penalty for 3 link cars
5. Solid upper link only, no spring loaded links or trailing arms, rubber bisquit ok
Batteries - Batteries may be moved to the inside or trunk area of the car but must be in a marine type battery case fully covered and securely mounted.

Fuel Cell - Fuel tank and filler neck must be inside trunk area and bolted in place (not in stock position under car). Must be in steel case .028 or thicker and be strapped top and bottom 2" wide min. Must have tip over valve.

Transmissions

1. Standard transmission must have stock type clutch and pressure plate. 10" minimum stock flywheel. No Multi-disc clutch units or aluminum or automatic flywheels. Must have all forward and reverse gears. Standard transmissions must have explosion proof steel bell housings.
2. Automatic transmission - full automatic. Stock torque converter must work. No disk drives.

Rear Ends

1. Stock type rear end or 9" Ford rear end allowed. Locked only. Floating axles allowed. Aftermarket mounts on rear end housing may be no higher than 3" above housing.
2. Four wheel disc brakes allowed but must use stock iron calipers.

Safety

1. All cars must be equipped with a 5-point quick release type seat belt and shoulder harness securely fastened to the frame or roll cage with minimum 3/8" grade 5 bolts.
2. Seat belt or harness must be at least 3" material.
3. Approved helmet with face shield or goggles required.
4. Window net and mounting hardware required.

Engines

OPTIONAL ENGINE PACKAGE- May run GM 602 Crate Engine w/Brinn and STOCK 650 Holley Carburetor.

1. Engine must be same as manufacturers body - engine setback - #1 (or forward most) plug no further back than top ball joint.
2. Bored block cannot exceed .060. No destroked or stroked engines allowed such as 377 or 383 Chevy.
3. Maximum cubic inches: Chevy, Ford, Mopar - 362
4. Flat topped or dish pistons only. Stock rods and crank shaft only. No capped rods.
5. .Cast iron heads only. No angle plug, bowtie, iron eagle, etc. Stock valves or stainless steel (no titanium) 1.94 intake max 1.60 exhaust max. World product heads 052 and vortec heads allowed. May port match 3/8".
6. Any aluminum intake allowed must not be more than 4 7/8" from top of plentum to carb mounting flange
7. Roller rockers allowed, but must be stud mounted. No shaft mounted rockers. 1.5 ratio only.
8. Hydraulic camshaft with hydraulic lifters only. No solid lifters or rollers. Maximum lift .500 at valve. Measured .333 at camshaft
9. Pump gasoline or racing fuel. No additives or NOS allowed.
10. Stock Holley 4412 carburetor, max. 500 CFM.. Max. 1¼" high adapter plate. 650 CFM Holley on 602
Crate Motor Only.
11. Timing chains only.
12. Ignition -MSD ALLOWED
13 .May run in frame or over frame headers. Exhaust must exit parallel with ground, no turned down exhaust. No 180 or crossover headers

Weight Rule

1. All Hobby cars must weigh 3,000 pounds after the race with driver in the car.
2. All weight will be external of driver compartment.
Lead

Weight must be securely mounted to the car's frame or roll cage. The lead must be painted white and have the car's number legibly and visibly painted on it. The lead must be secured with at least two 1/2" bolts.