U.P. MUD DRAG ASSOCIATION
MUD DRAG CLASS RULES – (NON-SANCTIONED RACE)
JULY 1st & 2nd, 2011 @ UP STATE FAIR GROUNDS IN ESCANABA, MI
(ONLY 2 CLASSES OF RACING)

GENERAL RULES

1. Seat belts and helmets are REQUIRED for drivers.
2. Minimum of one tow hook or clevis at each end of the vehicle is MANDATORY!

CLASS 1 – SUPER STOCK / PRO STOCK CLASS:

• No fuels other than gas. NO NITROUS.
• The tires must be D.O.T. approved. Cut tires will be permitted.
• Any racing suspensions are allowed.
• Must have a COMPLETE OEM frame. Must have full length frame rails to meet the production dimensions.
• The vehicle must have a complete O.E.M. body in appearance, fiberglass bodies are OK.
• Gutting of the vehicles interior is allowed.
• No chain drives or tube frames are allowed.
• If the vehicle is gutted, you must have a four point roll cage. Roll cage must be steel tubing or chromoly with a minimum wall thickness of .095. If you cut any support what-so-ever, you must have a roll cage. It is recommended to be one continuous loop over your head.
• Radiators can be moved out of the engine compartment, but must be separated from the driver by a firewall or have an SFI approved driving suit.
• Axles must remain in stock location of the frame being used.
• The face of the harmonic balancer (not the bolt) must be forward or in the center of the front axle tube.
• The engine can only have one carburetor.
• There will be no after-market blowers, turbochargers, or fuel injection.
• All vehicles must have two (2) return springs on the throttle linkage.
• If you have a transbrake, you must have an SFI approved transmission blanket or shield.
• You must have a firewall between the driver and the motor, or an SFI approved fire suit.
• You must have a fire extinguisher reachable from the driver’s seat and at least one drive shaft hoop per drive shaft to race.
• Arm restraints or window nets/covers are MANDATORY.

CLASS 2 – STREET STOCK / IMPROVED STOCK CLASS:

• There is a 4 out of 6 modification rule. (5) of these modifications will put you into SUPER STOCK class. After-market intake, headers, a carburetor which did not come as stock equipment on a one-ton or less four wheel drive ( O.E.M. replacement carburetors’ are OK ), an engine swap, moving the radiator out of the engine compartment, or body swap.
• OEM Aluminum blocks, heads & injection are allowed if they were available in a production one-ton or less four wheel drive truck.
• No air shifters or Trans. brakes. (You can have them, but don’t use them)
• NO gutting of the vehicle will be allowed.
• The engine must remain in the stock position.
• No headers through the hood.
• No chain drives or tube frames are allowed.
• No aftermarket aluminum heads or race suspensions.
• The body must retain a stock appearance. The seats must be located in stock position.
• No relocation of axles.
• Tires must be uncut D.O.T. approved, re-grooving to a stock configuration is permitted.
• There is a vacuum rule in effect. All stock vehicles must be able to hold 12 inches of direct manifold vacuum at 1000 rpm; at any time asked to do so. You only get 2 chances at pulling vacuum. Let the Tech. Inspector know when you are ready to try. No timing adjustments after pulling vacuum!!!!! These vehicles must provide a port to be checked. If no port is provided, the vehicle will be allowed to race in SUPER STOCK class and be BARRED from this class.
• No racing fiberglass, panels must be OEM and retain stock appearance at the discretion of the Tech. Inspectors.
• Traction aids such as ladder or traction bars are allowed. Vehicle must retain complete stock OEM suspension.