USAC Tech Notes: TORC PRO LIGHT V8 Rules Package for 2010

1. Oil Pump
   The dry sump system was discussed vs. the wet sump system. Wet sump has been shown to evacuate oil from the motor and since this is a durable engine, keeping the cost down and not creating a lot of work, the dry sump system has been proven in other forms of truck racing. The dry sump also offers more room for transmission placement. Dry sump systems cost more and will it open up the opportunity to cheat? Oil pump systems do not produce hp gain and dry sump will produce a big improvement in oil temp. Conclusion, four stage dry sump system is optional; however the remote filter, pump, pan and tank will be spec'd by the engine mfg. Seals will not be required on the oil pan so teams can change the pan and service the bearings.
   
   
2. Off-Set
   The transmission and engine oil pan must fit within the frame rails without cutting or modification of the transmission pan or engine oil pan.
   
   
3. Alternator and Power Steering
   Mounting of alternator and power steering is open, any location possible is acceptable.
   
   
4. Carburetor
   A 650 Holly 80541-1 carburetor is recommended. Performance adjusting with tools such as a screwdriver is acceptable, no other modification is allowed. Tech will utilize a bore scope or go/no go gauge. A 1" spacer is allowed, 4 hole, tapered and not spec'd.
   
   
5. Tire Rule
   The tire and wheel rule for this class stands. However the Series will be conducting research and testing on a 17" size tire and wheel.
   
   
6. Headers and Exhaust
   The Series is working directly with a manufacturer to create a spec'd header utilizing 1 ¾" tube size, 4-1 collector, with a straight and down no merge 3" tube exhaust with muffler.
   
   
7. Ignition
   An MSD ignition box and wiring with a max. 6,000 RPM chip will be required. The chip could be adjusted if necessary.
   
   
8. Motor Set-Back
   After a long discussion regarding driveshaft length and cab space, the motor set back will be 42" +/- 2" measured from the right back of the block at the engine alignment dowel location.
   
   
9. Transmission
   Any manufacturer's turbo 400 transmission with standard gearing will be spec'd. An aftermarket short extension housing is allowed for placement.
   
   
10. Truck Weight
    A minimum truck weight of 2,900 pounds with 45% front distribution is allowed.
    
    
11. Radiator Placement
    The existing PRO Light truck with 4 cylinder motor radiator placement is in the front. The V-8 PRO Light truck will place radiator in the rear.