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6000 Light Hot Farm

6000 lbs. Light Hot Farm

1. Tractors in the class will represent any year sheet metal.

2. Limited to a box, bone-stock 3LM466 turbo charger, sealed at beginning of season. Must be the factory exhaust housing supplied with the turbo. “Small” motors with small base exhaust will run with 3LM466 adapted to fit their exhaust manifold. All turbo inspections will be done by SKPP Parts for this class, 270-590-0020 or turbo can be supplied thru SKPP.

3. Injection Pumps: Rotary and 10mm A pump allowed, all CID combinations. P-Pump allowed 399CID and below. No electronic pumps allowed.

4. 480 CID maximum CID, 1% variance. No de-cubing allowed to meet specs.

5. 0-399CID, 3500RPM. 400-480CID, 3000RMP monitored by sensor (sensor part #isspro R8906). No splices in harness allowed from sensor point to plug at back of tractor.

6. No water injection, no intercoolers or after coolers.

7. OEM exhaust and intake manifolds only for engine series used. No recast heads, No pro-fab-style transmissions.

8. Diesel Fuel Only: no pressurized power- adders (propane, nitrous, etc.) of any kind allowed.

9. Front of tractor weights cannot measure beyond 13 feet of centerline of rear axle. All tractors must have front lifting device capable of supporting tractor weight for towing.

10. 18.4x34 tire maximum, any cut radials allowed, 18.4R or metric equivalent. 460/85/R38 or 480/80/R38.

11. Hitch can be no more than 20 inches in height, a minimum of 18 inches from centerline of rear axle.

12. No shifting up or down while in competition.

13. Drivers 14 years and older allowed. Any driver under 18 requires parental consent.

14. To encourage variety in class, Sheet metal / rear end / transmission. Engine can be in series with same OEM as Sheet metal/transmission/rear end. (Examples of possible combinations: 5.9 Cummins with M5 Moline metal/UTS rear end/478 Hercules with 1800 rear end/1950 sheet metal, Ford Commander sheet metal/5000 rear end/Genesis engine, Allis 180 with 426, IH M rear end/450 Sheet metal/400 series engine) Numerous combinations possible!


1. SFI approved steel flywheels and scatter blankets required.

2. Tie bars required.

3. Helmets and Fire Suits required, must have a fire extinguisher on-board mounted for quick access.

4. Roll cages, minimum 2-Bar assembles, high back seat with 5 point harness required.

5. Guillotine Air Shut-off required. On-board fuel shut off must be accessible from strapped – in position.

6. Dead man throttle required.

7. Wide front ends only.

8. Wheelie bars required, with 4x4 pads that are no more than 10 inches off the ground. Wheelie bars must be able to support weight of tractor independently.

9. No hanging weights can extend beyond rear tire. Tractor must have 200 lbs. movable weight.

10. Side shields required.

11. (2) 3/8ths bolts fitted in a cross pattern on the exhaust side required.

12. Fenders must extend above top of tire.

Melanie Wiley,
Oct 22, 2017, 5:18 PM