![]() The wheel may be no larger than this measurement at the outlet. An exhaust measurement to be measured at the face of the wheel outlet of a maximum of 3 in. Tips of wheel must protrude into opening at least 1/8”. Compressor housing inlet bore to be no more than 2.75″ maximum. The wheel may be no larger than this measurement at the inlet. ![]() ![]() A compressor measurement to be measured at the face of the wheel a maximum of 2.7 in. Compressor housing must be 3LM style with 2” OD outlet.Ĭ. T-18A95 with a smaller base welded to it. No altering of a housing to accommodate a smaller base e.g. Exhaust bolt pattern no larger than 2.750 in x 3. TURBO, ONE ONLY: One single stage turbo allowed. May strengthen manifolds by welding gussets/braces. Agricultural style intake manifolds including intercooler type manifolds, intercoolers must be unhooked with no hoses attached to cooler( No functioning intercoolers allowed). SUPERSTOCK TRACTOR PULLS SERIESMANIFOLDS: OEM stock intake and exhaust manifolds for that series engine, alteration for turbo mounting allowed. INJECTOR PUMPS: P 7100 series Pump maximum, one plunger per cylinder. Excessive is defined as any steady or intermittent stream discharged onto the track or a spot equivalent to more than 8″ in diameter. No excessive loss of liquid onto track by a vehicle while hooked to sled unless caused by breakage. SUPERSTOCK TRACTOR PULLS DRIVERDriver must be in seat at all times while engine is running. Must have 3/8 cable around block and head. SUPERSTOCK TRACTOR PULLS FULLSAFETY EQUIPMENT: Full face helmet, Fire Suit, Wheelie bars, Roll cages, kill switches, fire extinguishers, fenders, side shields, SFI flywheels and pressure plates, scatter blanket or steel shields, no steel fans, all electric fuel pumps must be wired to the kill switch. TOTAL LENGTH OF TRACTOR: Maximum length 13′ from center of rear axle to the furthest point forward, including weights. Frames may be altered to except upgraded blocks. Maximum wheelbase to be no more than 114″. HOOD, GRILL, FRAME, TRANSMISSION, REAR END, AXLE: Must be for that make and model and must maintain stock appearance. A drawbar that has provisions to be made shorter than legal length is not acceptable as a legal drawbar. Hitches must have at least a 3″x3¾” hole with minimum of one inch of material around the outside. Draw bars must be stationary in all directions. No part of draw bar may extend rearward beyond point of hook. No billet steel or aluminum.ĭRAW BAR: Draw bars must not exceed 20 inches in height or less than 18 inches from center of axle to hooking point. HEADS: Recast heads allowed, OEM dimensions, OEM intake and exhaust manifolds in factory locations. All tractors must have a cubic inch, turbo, and Safety inspection before they are permitted to compete. ![]() Examples: IH 68 series 466, JD 40 series 8.1L, JD 5010 & 5020 can decube a 619 block, AC 516, Case 504, Ford 478, MM 504, Oliver 478 and others to be approved by the committee ALL ENGINES MUST BE 531 CUBIC INCHES OR SMALLER. All up graded Blocks must be approved by the committee. ![]() TIRES: 18.4 x 38 maximum radials allowed.ĬYLINDER BLOCK AND CRANK CASE: Must be from the same manufacturer. WATER INJECTION: Water must pass propylene oxide spot test. Under 18 must have parent or guardian consent form signed. WEIGHT: 7700# If a competitor moves more than 200 lb of weight forward, that vehicle’s drawbar may be remeasured and vehicle reweighed at the discretion of the official.ĪGE OF TRACTOR: 1980 and older but including total run of that model.ĪGE OF DRIVER: 16 years or older. ![]()
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