
Irwindale Speedway Super Stock Rules Clarifications 9/3/20
Irwindale Speedway Super Stock Rules Adjustment Minimum weight 3300 lbs with driver. B)All true super stock cars with OEM Steel roof with A-post,B-post and rear quarter panel tops (lower half of quarter maybe replaced with sheet metal) You must also have portions of the stock floorboard ,portions of the stock &helip;