Danny Heineman & Sons Mini Stock Rear Wheel Drive Rules

#1 – Body

1.1 STOCK APPEARING BODIES ONLY! Can buy aftermarket body packages from 5 star Bodies or Performance Bodies or make your own bodies from steel or aluminum will be legal.

1.2 Rear body must be closed in.

1.3 Any 4 cylinder Rear Wheel Drive front engine Car.

1.4 Minimum weight 2500 lbs. with driver.

1.5 Recommend to tie front frame to rear of car with 2×2 and attach roll cage to 2×2 but not mandatory.

1.6 Must have complete 4 point cage installed in professional matter 1 1/2″ .095 tubing min 3 door bars on drivers side. 6 point cage with 4 driver and 3 passenger side door bars strongly recommended.

1.8 Aluminum racing seat and 5 point harness mandatory! Seat must be attached to roll cage with at least 6 Grade 8 3/8 bolts. Belts must not be older than 5 years and properly attached to roll cage.

1.9 12 gal max racing fuel cell STRONGLY recommended.  If running stock fuel tank must have steel skid plate and be securely mounted.


#2 – Front / Rear Suspension

2.1 Chassis must retain stock type suspension. NO adjustable spring pockets allowed

2.2 Wheel base must be stock for that make/model car. Wheel base MUST be square within a 1/2″ tolerance on both sides.

2.3 Quick Steers are not allowed.


#3 – Engine

3.1 Engine must remain stock as manufactured. DOHC engines are allowed. No Rotary Motors Allowed

3.2 No turbo chargers, only naturally aspirated motors.

3.3 Must be same engine for make.

3.4 No strokers.

3.5 Block may be bored up to .060

3.6 NO Aftermarket Rods or Cranks.

3.7 No porting polishing of any sort to heads stock OEM size valves plus or minus 0.010.

3.8 Stock intake no machine work to be done on intake.

3.9 No high performance ignitions or ignition boxes. OEM only.

3.10 Stock carburetors, stock fuel injected or stock Holley 2 barrel 4412 or 4412s carburetors must pass track tech inspection tools.

3.11 Site plug optional in oil pan on drivers side of oil pan, towards the front of pan, 3 to 6 inches back OR be prepared to pull oil pan.

3.12 Headers allowed but will have a $200 (new) maximum that can be spent on them. Stock manifolds are allowed.

3.13 OEM 12volt ignition systems only.


#4 – Transmission, bell housing, drives shaft

4.1 Front and rear hoops strongly suggested.


#5 – Brakes

5.1 4 wheel brakes must work at all times.

5.2 NO Emergency Brakes Allowed


#6 – Tires and Wheels

6.1 Steel racing wheels 7′ wide.

6.2 Hoosier, American racing or any dot passenger tire allowed. NO snows, 7 inch tires max width.


#7 – Other

7.1 Mufflers mandatory


NOTE: While the above rules offer a good outline, not everything can be covered by a written rule.  If a car has a part that no one else has, and its not mentioned in the rules, its not assumed legal.  Ask First. If you want to run anything not covered contact tech@freedommotorsportspark.com if you don’t ask and anything is found it will automatically be ruled illegal. Any item found illegal will be confiscated!