Event Schedule Photos Videos MMTTPA Rules Contact Us
Announcements Links Main Page Results Page
Street Diesel Trucks
1) Weight Breaks: 8000 lbs. Weight is with driver.
2) Weights must be secured and may not extend more than 60 inches from the centerline of the front axle. Weights may be fastened in the rear bed, but are not allowed in the cab of truck. No tarp straps allowed for any purpose.
3) No passengers allowed
4) Seat belts are required and must be worn while truck is on the track; and drivers side window must be down.
5) Interior seats may be removed except for the drivers seat.
6) No fuel tanks allowed inside the cab.
7) All trucks must be weighted and certified. Under hood inspection will be made at that time.
8) Trucks must be in safe operating condition.
9) The frame and wheelbase, must be the OEM for that truck. The body must retain full sheet metal floor. If the truck has been gutted, 200lbs of movable weight must be placed rearward of the centerline of the rear axle.
10) Four-wheel hydraulic brakes are mandatory.
11) The engine must be in the OEM stock location. Engines must be of the stock cubic inch. Engines may be changed to cross factory lines of manufacturing, (cummins may be put in Ford or Chevy) Factory option engines for 1 ton trucks and lighter are only allowed. No aftermarket blocks
12) Aftermarket transmission and transfer case are allowed
13) Dual rear wheels are allowed.
14) Rear suspension may be welded
15) Traction and ladder bars are allowed.
16) All front axles must have coil or leaf springs and must be in stock location. Adjustable front suspension stops must be mechanical. Pneumatic, hydraulic, and electrical adjustable stops are not allowed.
17) The tires must be DOT street tires. No altered, cut, or recap tires allowed. Maximum diameter is 35.
18) Hitch height shall be a maximum of 26. No transfer type hitches allowed. Receivers must be made of solid steel with an oblong shaped hole 3 Ύ long and 3 wide. Hitch must be frame mounted behind the rear axle of vehicle. No pulling point above truck frame rails with 44 minimum from center of rear axle to hook point. Rear bumper bars are required.
19) Turbocharger: The vehicle is limited to a single turbocharger; the inducer bore on the compressor housing may be no larger than 3 inches measured at the smallest diameter area of the compressor wheel. A bushing may be used to downsize the compressor housing ahead of the wheel. If a bushing is used, it must be round, at least Ύ inch long, mounted within 0.050 inch of the compressor wheel, and the inside diameter of the bushing may not exceed the 3 inch limit. The inducer bore will be measured using a 3.05 plug. Map enhancement groove is allowed. All provisions allowing air to the wheel other than via the bore and the map groove are prohibited.
20) Aftermarket computer chips and auxiliary boxes are allowed.
21) Water injection (only) is allowed. Alcohol, methanol, propane, Nitrous Oxide and all oxygen extenders are prohibited.
22) The fuel injection pump is limited to any P series injection pump one plunger per cylinder.
23) All trucks must have a three way dump valve (manual) ahead of the injection pump to be operated from the dash panel and must be equipped with a functioning air shut-off. That is operated from the rear of the vehicle. The air shut-off switch must have a 2 ring and be mounted directly above the hitch in the center of the tailgate area.
24) Drive shaft Loops: All trucks must have three round metal loops shielding on each driveshaft (two piece driveshaft will have six metal loops).360 degree loop must be constructed of at least 5/16 inch steel or 3/8 inch aluminum, Ύ wide or wider and not more than 2 from the shaft in any direction. End loops to be placed no further than 6 from universal joints, with third loop in center of shaft, or can be a solid tube (3/8 aluminum or 5/16 steel) meeting the above requirements.
25) .All trucks will have 360 degree metal shields around the universal joints, 3/8 thick aluminum with 1/8 steel insert or ½ aluminum or 5/16 steel. Minimum width 6. The insert must be a minimum of 6 wide. Shield must have a minimum of 2 clearance and a maximum of 4 clearance.
26) Exhaust: may exit thru hood of vehicle and must point upward Two 3/8 inch diameter bolts minimum grade 5 must be placed through the exhaust pipe, 90 degrees from each other, within one inch of each other as close to the turbo as possible.
27) All vehicles are required to have an SFI approved clutch, and flywheel, An SFI approved scatter blanket(s) is required around the bellhousing or SFI approved clutch can.
28) Axle and hub bolt shields required to be minimum of .060 thick. Minimum diameter of axle end and hub bolts to be covered on both front and rear axles. Mounting shield cannot be mounted to axle end or hub bolts. A hole may be installed in the center of front shield so that lock can be operated, so long as hub end or axle bolts are covered.