Please email any and all technical and rule questions regarding any of the SWMMRA rules to tech@swmmra.org.
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| TIRES |
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36” maximum DOT tire ~Sized by physical measurement. |
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No cutting or grooving. |
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No paddle tires. |
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| ENGINE |
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Gasoline only, NO nitrous, alcohol or forced induction. |
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Roller rockers allowed. No roller lifters or roller camshafts. |
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No after market fuel injection. |
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Big blocks allowed, must be in stock location. |
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468 cubic inches maximum ~ Carb swaps allowed. |
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No trans brake ~ No aluminum heads. Open headers allowed if exiting up or down, not out side. |
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Must run a steady 15 inches of engine manifold vacuum (minimum) at 800 RPM’s for 30 seconds. No vacuum pumps or equipment that will produce vacuum. |
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Front or rear mounted radiators allowed but must have shielding to protect the driver in the event of a leak. |
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Approved transmission blanket or shield required on all auto transmissions. Scattershield required on bellhousings of manual transmission equipped trucks. |
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| BODY |
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Complete body required, corp. matching, make and model. |
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Rear seat and tailgate may be removed. |
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Must have 2 operable doors unless open bodied. |
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Body must be completely intact. |
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Minimal fender well trimming to accommodate larger tires. |
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Dash components may be removed (components only). |
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OEM Bench seat allowed/ racing seat strongly recommended. |
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No fuel tanks inside drivers compartment. |
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| FRAME AND SUSPENSION |
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Total body & suspension lift not to exceed six (6) inches. |
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Must be factory suspension ~ Axle swaps allowed. Must have factory OEM unmodified frame. |
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Must have corporate transfer case. |
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Driver must sit in stock location. |
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Engine, tranny and chassis must be corporate matching. |
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Tow hooks required, front and rear. |
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Two point traction bar allowed. Must hook to the top center of the rear end and not to proceed past the front two spring hanger bolts on the rear springs. |
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Factory OEM suspension three full length leaf springs minimum allowed. |
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| SAFETY |
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4 point harness ~ 4 point roll cage ~ fire extinguisher. |
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Brake locks recommended on manual transmission equipped trucks. |
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Must have firesuit, pants and shirt required. |