2008 UMP STREET STOCK RULES
To All Drivers
v UMP state at the beginning of the 2007 season they would implement 4 to 5 rules for the 2008 season. These new rules are included below.
v Any rules not covered below are subject to track rules.
v About July or August 2008, UMP will introduce more rules for the following year.
v UMP will have a standard set of rules by 2009.
v Red print indicates a new rule for 2008.
CHASSIS
1. American made cars or full size Uni-body cars. Stock wheelbase of 107 inches or more.
2. Full Frame Cars only are allowed. Stock O.E.M. Frames only.
3. No altering of stock frame except to repair rusted rear frame rails. Rear frame may be replaced from rear shock mounts back.
4. Drive Shaft loops are required within 12 inches of front U-joint. No aluminum drive shaft.
5. Minimum weight is 3200 pounds at all times.
BODY
1. All glass, chrome, and upholstery must be removed.
2. Top may be removed to install the roll cage, but the top must be replaced in the stock location.
3. Doors can be cut out for door bars.
4. Fender wells may only be cut out for tire clearance.
5. Floorboards and firewalls must be stock and in stock location, except to cut the floorboard for the roll cage. No open holes in firewall allowed.
6. Trunk area may be cut to allow for mandatory fuel cell.
7. The fuel cell must be a steel container with two inch by 1/8 inch steel strap on each side to securely mount the fuel cell.
8. Body must be mounted in stock location. No exposed tubing or bracing outside of the bodyline of car. Body must be steel stock appearing body.
9. Plastic or aftermarket noses are allowed but cannot be the Late Model slope aerodynamic type nose. Nose must be stock appearing for make of car.
SUSPENSION
1. All suspension components must remain stock except for racing shocks and springs that are mounted in stock locations.
2. Steering shaft and steering wheel can be modified by adding shaft and quick release for safety.
3. Steering quickners are allowed.
4. Sweet steering is optional.
5. Stock upper ball joints only. No adjustable or truck ball joints. No cutting of frame allowed to accept any other ball joint.
6. A Frames may be reinforced along edges by welding round stock (no changing lengths).
7. Lower rear training arms to be stock length to frame being used, metric to metric, Chevelle to Chevelle, etc….
8. Upper rear trailing may be shortened or lengthened to obtain correct pinion angle.
9. Aftermarket bushings are allowed as long as arm is not altered. No slots or adjustable ends.
10. After market upper A-Arms are allowed.
ENGINE
1. No aluminum blocks or heads allowed. Any cast iron head is allowed.
2. Aluminum intake manifolds are allowed, exhaust headers are allowed. Exhaust must exit away from track surface.
3. No racing distributors allowed. HEI distributors are allowed. No MSD boxes.
4. Roller tip rockers are allowed.
5. Aluminum radiators are allowed.
6. The 500 CFM 4412 Holley is the only carburetor allowed. The choke blade can be removed, but the original choke tower must be retained. No other modifications.
7. The engine and body must be manufactured by the same corporate manufacturer. (i.e., GM to GM, Ford to Ford, etc.)
WHEELS AND TIRES
1. Steel racing wheels up to eight inches maximum width are allowed. No aluminum or mag wheels or homemade wheels are allowed. One inch lug nuts are mandatory on both sides of the vehicle.
2. The only tire allowed is the Hoosier Emod tire. D, H, or A compounds (the track may only allow certain compounds)
SAFETY
1. A competition-type 4 point roll cage is required and must be constructed with tubing that is a minimum of one and one-half inches in diameter, with a minimum of .095 wall thickness. A minimum of three horizontal door bars is required in the driver’s door. A minimum of three horizontal door bars are required for the passenger’s side of the car. Three driver protection bars are required in the windshield ahead of the driver. You may run front and rear bars through the firewall, with 1 kicker bar to the frame. A radiator protection bar is optional.
2. A competition-type racing seat is required. An aluminum seat is highly recommended.
3. A five point, three inch safety harness is required.
4. An approved, Snell SA 2000 or a Snell 2005 (Snell sticker must be in helmet) helmet is required.
5. An approved complete racing fire suit is required. Fireproof gloves, fireproof shoes, and neck collar are highly recommended. Also, a driver’s side window net is highly recommended.
6. All batteries that are mounted inside the driver’s compartment must be completely enclosed in a marine-type box with a lid, and mounted securely.
7. All weights must be securely mounted with two half inch bolts and be painted white with the car number clearly marked. All weights must be mounted under the body of the car.
8. Drive shafts must be painted white and must remain white all season.
FYI – From Sam Driggers, UMP Dirtcar Racing:
All tracks that have been UMP sanctioned with the Street Stock class, must set a time line in the 2008 season for all of their cars to be legal by the above rules.
If you are a new UMP Street Stock track, you have 1 year to bring your cars up to code.
All drivers do not forget if the rule is not listed in the above rules, you must conform to track rules. By the 2009 season, we will have a complete set of rules.
Some of you people need to understand that we at UMP Dirtcar started this class for you. We wanted you to be a part of something bigger and better. We have not ever done or said one thing that we did not follow through on. With that being said, you also need to know I will not tolerate people calling my office and disrespecting me or my staff. We do not owe you anything and will not be yelled, cursed, and screamed at by anyone, we do not do this to you and you will not do it to us.