 All bodies are required to be made of steel sheet metal.2,300 CC engine trucks have a minimum weight of 2,400 pounds, 2,400 CC engines 2,450 pounds, 2,500 CC engines 2,550 pounds, and all V8 trucks have a minimum weight of 2,850 pounds.All weights are measured with driver, with a maximum left side weight for 4 cylinder engines being 55% and 8 cylinder engines being 56%.