2019 2.6 Smoothbore Outlaw Pulling Series Truck Rules
Credentials: All drivers must have a valid driver’s license. Vehicle will be allowed to be hauled to the pull. All trucks must be a 1 ton or smaller chassis.
Weight: 8500 pounds Maximum, with driver.
Engine: The engine is limited to a stock appearing, diesel engine available from the factory in a one ton or smaller truck. Cubic inch limit of 444ci. Engines will be allowed to cross manufacturer’s lines (ex: a Ford may run a Cummins engine).
Body: The vehicle must retain the original unaltered factory wheelbase. The body must be an OEM truck body. Must retain full factory sheet metal, including bed floor. The hood may be aftermarket steel or fiberglass. The hood must be closed and securely latched while the vehicle is hooked to the sled. The complete OEM firewall and complete OEM floor pan is mandatory. The engine must be in the OEM location for the body being used. Front bumpers are mandatory; Ranch hand style and others are permitted. Rear Bumpers mandatory; Rear roll pans are allowed.
Fuel: The fuel must be pump #1 or #2 diesel only. Soy/Bio-diesel fuel is permitted. No power adders are permitted (propane, nitrous, water meth).
Fuel System: The OEM tank is mandatory and must be used. Racing fuel cells are prohibited and must be removed from the vehicle.
Intercoolers: Factory style or aftermarket air to air replacement only in the stock location. Air to water intercoolers are prohibited.
Exhaust: Strongly encourage all vehicles to have the exhaust exit upwards. Hood stacks are permitted. Trucks with excessive smoke must have a 90 degree turn up attached to the tailpipe. Final decisions rest with the technical department.
Cooling Systems: Radiators must be in the stock location and must be of at least stock size. Water pumps may be factory or electric. Electric cooling fans are permitted.
Ballast: Ballast is permitted and must not extend more than 60 inches from the centerline of the front axle. Weight boxes are allowed. All added weight must be secured in bed of truck or front mount. Truck will be disqualified if any weights or ballast falls off during the pull. Final decisions rest with the technical department.
Batteries: The batteries must be securely mounted. They may not be located in the driver compartment or forward of the radiator core support.
Brakes: Four-wheel fully operational OEM hydraulic brakes are mandatory.
Driveshaft Loops: All trucks running for points must have a minimum of six-inch wide u-joint shields around the rear u-joint. Must be constructed of at least 1/4 inch steel or 3/8 inch aluminum that will safely contain the u-joint and the end of the rear shaft. Shields around all the u-joints is encouraged.
Fuel Injection Pump: The fuel injection pump is limited to a stock-appearing, OEM engine make-specific pump only. Dual high-pressure common-rail fuel pumps or HPOPs are permitted.
Interior: A complete interior, including dashboard, door panels, headliner, etc., is mandatory. Two matching OEM style front seats are mandatory. Must have functioning headlights and rear marker lights.
Hitch: The hitch must be a receiver-style hitch; reinforcements are permitted. Reinforcements must not extend forward of the centerline of the rear axle. Trick hitches are prohibited. The hooking point must be the rear-most point on the vehicle and must be rearward of the stock location of the tailgate. Hitch must be a minimum of 44” measured form the centerline of the rear axle to the hooking point. The hitch must be horizontal to the ground and stationary in all directions. Bumpers may be notched or removed. The hitch height from the ground may not exceed 26 inches. The hooking point must have a minimum 3.750-inch inside diameter opening for the sled hook. Hooking point (i.e. where the hook drops) must be parallel to the ground. Final decision of legality of all hitches resides with the head tech official.
Rear Axle: Non-OEM rear-axle housings are prohibited. The rear axle must have been an option on a 1-ton or smaller truck.
Steering: The vehicle must retain the full, original OEM steering gear. The vehicle must retain the original OEM power steering assistance, if it was so equipped. Additional stabilizers are permitted.
Rear suspension: The rear suspension may be solid. Rear suspension must retain OEM configuration. Traction bars are allowed.
Front Suspension: The factory suspension configuration must be retained. Traction bars and devices are permitted.
Tires: The tires must be DOT street tires. Cut tires are prohibited. Dual rear tires permitted.Transfer Case: Non-OEM transfer cases are prohibited. It must have been an option on a one-ton or smaller pick-up truck.
Transmission, Automatic: Non-OEM transmissions are prohibited. Aftermarket torque converters, valve bodies and internal components are permitted. Transmission brakes are prohibited. Any non-OEM floor-mounted automatic transmission shifter must be equipped with a spring-loaded positive reverse lockout device to prevent the shifter from accidentally being put into reverse gear. A functional neutral safety switch is mandatory. All transmission lines must be metallic or high-pressure-type hose. All vehicles with engines running 4500 RPM or more and using an automatic transmission must be equipped with a transmission shield meeting SFI Spec 4.1 and must be labeled accordingly. A blanket-type shield is permitted; it must be appropriately labeled as meeting SFI Spec 4.1 and it must extend from the rear of the block to the front of tail housing with a minimum six-inch overlap where it is fastened. All vehicles with engines running 4500 RPM or more and using an automatic transmission must be equipped with a flex plate meeting a Minimum SFI Spec 29.1 and be covered by a flex plate shield meeting SFI Spec 30.1
Transmission, Manual: Non-OEM transmissions are prohibited. Aftermarket internal components are permitted. A clutch meeting minimum SFI Spec 1.1 or 1.2 is mandatory on all vehicles with engines running 4500 RPM or more. All manual transmissions must be clutch assisted. All vehicles with engines running 4500 RPM or more and equipped with a manual transmission must have a flywheel shield labeled as meeting minimum SFI Spec 6.3 or greater. Applications for which an SFI Spec flywheel shield is not available may use a properly attached SFI 4.1 or 4.2 blanket that completely covers the bell housing; it must be attached to the block and extend rearward to the transmission with a minimum six inch overlap where it is fastened.
Turbocharger: For the 2019 season the vehicle is limited to a single turbo with a compressor inducer of 2.6” smoothbore. Competitors must make provisions at tech officials' request to allow complete inspection of the compressor wheel and housing. Failure to comply with the request will result in disqualification until the turbo is re-inspected. The 2.6 smoothbore is limited to a 2.6” inducer bore with no MWE provisions that allow additional airflow to the wheel and will be checked with a 2.605” plug. The turbo can have a t3 or t4 foot. The down pipe needs to have at least 2 3/8” bolts in a cross pattern as close to the turbo as possible.