KOCH
PROMOTIONS
R
acing
Pre-Entry deadline to receive a driver shirt
for this class is Nov. 1
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Limited Weld Truck Class Rules
Types of Trucks: Any year up to 1 ton truck & SUV. Either 2 or 4 wheel drive models. 4wd can only run one driveshaft. A Suburban roof cannot be smashed down in rear.
A. Body
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All trucks must have numbers on both doors in contrasting colors. Roof signs highly suggested
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All glass headlights, taillights, trim, and interior must be removed. Must be swept clean including bed
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A minimum of 1 no more than 2 vertical safety wire, bar, or chain must be in windshield area sheet metal to sheet metal. Or dash bar to rollover bar.
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Doors must be welded, chained, bolted, wired or any safe combination. Straps for door seams 3'' max​
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A four sided cage with rollover bar is mandatory. 5'' maximum cage material​​
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Cage must not extend more than 6'' in front of doors and may extend behind cab 8'' to mount rollover bar
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Down bars may go to frame
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Gas tank protector is allowed but must not go past 24'' from front of bed
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Doors may be plated on inside or outside with no more than 1/4” plate for driver/passenger protection
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Bed may have additional washers and 1” max bolt or all thread (not welded) 3'' maximum above floor of bed and in upper flange of frame
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4 additional bolts in bed floor
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Rubber mounts may be removed
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Factory bed floors only
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Bed may be welded to cab on sides (6'' strap) only or wired with 4 spots of 9 wire double stranded and bolted through back of cab
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Tailgate may be welded on with a maximum of 3 '' angle iron and may be dropped below frame
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Tailgate may be bolted to bumper with up to 2 bolts
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50% of bedsides must remain upright
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Cab may be wired or bolted solid to frame with 4 extra bolts and washers 1'' max size bolt or all thread
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Hoods must have 12'' hole over carb
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Factory hood hinge bolts may be replaced with up to 3/8'' bolts
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Hood may be wired or bolted shut with up to 6 bolts. The core support may be bolted through frame to top of hood. The 2” x 2” x 1/4” core support spacer may be welded to the frame and extend no higher than the top of the core support.
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Washers may be welded to all wire or bolt holes in hood and fenders
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Inner fenders may be wired to the frame but not bolted or welded.
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Each wheel opening may be bolted with up to 6 maximum 3/8'' bolts and 12 washers.
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No inner body bracing or bars or plate.
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Body panels must remain stock layers and thickness
B. Frame
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Truck bumper or car bumper, no excessive pointy bumpers
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Loaded bumpers allowed
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Front and back bumpers may be welded on and may be chained or wired with a maximum of 4 short pieces between bumper and frame
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Steel may be added to allow mounting of front bumper but may not extend past back edge of core support or 6'' of frame
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No bumper shocks
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Maximum distance of front bumper to ground 26'' rear bumper minimum of 16'' to ground
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All rear bumpers must be flat (NO points allowed!)
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All frames must have no additional plating outside what is listed in the rules.
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Factory core support cannot be moved or re-located
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Do not add cable, wire, chain, fillers, welds, or added reinforcements inside or outside of frame.
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***You may use 4 (4” X 6”) patches no more than ¼” in thickness if and only if, the frame is bent, broken, or torn in the location of the patch. There are to be no patches used on a fresh truck. This class is intended by you the drivers to stay a light weld class. Please do not abuse this rule. Excessive patching will result in excessive cutting.
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Suspension
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Stock leaf count and position
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2wd trucks can have bolted down a-arms
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You may weld suspension components such as upper and lower control arms
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Rear coil spring may be clamped or welded in place
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The maximum number of leaf springs in any truck will be 10 in front and 10 in rear
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You may add 4 clamps per spring pack in front and 4 clamps per spring pack in rear
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Clamp size is 2'' x 4'' with 3/8'' bolts
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Trailer hitches must be removed
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Any type rear end may be used in any truck
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No studs, screws, wheel weights, or split rims. Valve stem protectors are allowed
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You may have a ¼” thick by 12” long hump plate. This plate may connect to the rear-end housing with a 3” connection. So it should be diamond shaped, 12” on frame, 3” on rear.
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C. Drivetrain
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Engine and Trans of choice allowed.
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Battery/batteries must be relocated to front floorboard or cage mounted and securely fastened and covered
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Original fuel tank must be removed and a steel tank or fuel cell must be mounted on front center of bed area securely bolted in place and covered.
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Fuel lines may be metal or rubber
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Rubber lines inside cab should be hose inside of hose.
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Electric fuel pumps must have clearly marked shutoff switch within reach of driver
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Distributor protectors and engine cradles are allowed.
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Transmission protectors are allowed.
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Exhaust must be straight up or straight down or exit behind the rear of cab
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Radiators must stay in stock location
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Over flow tanks are permitted.
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Additional radiator overflow must be directed toward the ground
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Transmission coolers are allowed. These must be installed in a safe manner as deemed by the inspector