NEW For 2026: We will be spliting the PPL/ITPA & BoB/Interstate Tractors into their own qualifiers and will pull in their own finals Saturday Night. Also, we will be following PPL fuel & water standards. Diesel fuel standards on the dielectric constant test are greater than 30 and less than 150. Pullers can use their OWN water in 2026. No oxygen carriers or combustion accelerators allowed in water injection. Only water-soluble oil permitted in water injection. Water injection maximum reading on efractoneter is 5.0 (updated 9/2025)
1. All tractors have to meet NTPA/PPL/Outlaw safety standards and chassis configurations. No component
chassis allowed.
PPL/ITPA Rules
2. Cubic Inch Limit: 470 c.i.d.
3. Turbocharger Limit: Single turbo with 3-inch diameter intake maximum. Diameter measured at front face of
wheel. Compressor wheel must enter into the compressor housing. Map width enhancement grooves are NOT
allowed at a weight of 8,700 lbs.
1. Fuel Pump -Bosch P series pump Model 3000 and 7100 maximum size allowed
2. Engine - OEM stock block
3. OEM style and dimension cylinder heads. Aftermarket manifolds permitted. Maximum of 2 valves per cylinder.
a. Any cast or manufactured cylinder head will be accepted. No billet. Cylinder head must retain OEM (Length/
Width/Height) for engine application. Valves must retain OEM angle for engine application. 2 valve per
cylinder maximum. Cylinder head must retain OEM bolt pattern for exhaust manifold and intake bolt pattern
must be used to attach the exhaust manifold and intake. Manifold must bolt 90 degrees to head. No overhead
cams permitted. Bottom of head to top of port: A/C: 2.675 IH: 3.100 JD: 3.250 NH: 3.750
3. No intercoolers
4. Tires: 24.5 x 32 only NO 20.8 x 38 allowed.
5. Exhaust: A smoke tube is required, indoor only. Exhaust must have an Whatssmokin Promotions approved
turbocharger exhaust wheel deflection device, plus two 1/2 of an inch bolts, grade 8 minimum, positioned in the
exhaust tube 90 degrees to each other and with 1 inch of each other.
6. Front Hitch: All vehicles must have a front hitch attached to the vehicle that is capable of supporting the
weight of the front of the vehicle. It must be the furthest most point on the vehicle and be centrally located. The
hitch must have a minimum of a 3 inch diameter hole to allow for the 3 point mounted hitches on the movers to
manipulate the competing vehicles. No weights are to be positioned next to the hitch in a way that may restrict
the turning radius of the movers once they have picked up the front of the vehicle.
BoB Rules
Maximum weight of 8500 lb. ·
510 cubic inch displacement ·
NO 8600series P- pumps. ·
OEM AG rearend and motor block must be bolted solid to transmission. ·
Aluminum heads are not allowed. OEM Only (no recast heads). ·
Only two (2) valves per cylinder. ·
Fuel Pump- any pump maximum P-pump. P3000 or P7100 ·
Water injection allowed, water with oil lubricant only.·
OEM intake and exhaust manifolds only. NO homemade manifolds allowed. ·
NOintercoolers or after-coolers are permitted to be bolted on any head at any time. ·
One(1) 3X4 turbo with .250 map groove allowed No forward-facing map groove. ·OR a 3.4X4 Smooth Bore Turbo
Intake housing to be no larger than 3 inch at the face of the wheel.
Single compressor wheel must protrude into 3 inch bore at least 1/8”. Stock map location with enhancement is permitted. 4’ maximum on exhaust side of the turbo. ·
Sheet Metal and Frame:-Front weights shall not extend more than 13 feet from the center of the rear axle.-
Maximum wheelbase of 114 inches.-No components tractors allowed. ·
Fuel:-No compressed air, nitrous oxide, fuel conversions, propane or nitro methane allowed. The only exception is the use of starting aid.-Diesel fuel will be the only fuel accepted.-No oxygen carriers, or combustion accelerators allowed in fuel.-150 limit on dielectric test ·
Tires:-Maximum tire size of 24.5X32
Hitch:-Minimum hitch length of 18 inches measured from the center of the rear axle.-
Maximum hitch height of 20 inches.-Hitch shall remain stationary in all directions.