1971 Chevrolet C20 Pickup Engine: 4.8L L6 GAS; Position: Upper;. 1972 Chevrolet C20 Pickup Engine: 4.8L L6 GAS; Position: Upper;. 1973 Chevrolet C20 Pickup Engine: 4.1L L6 GAS; Position: Upper;. 1973 Chevrolet C20 Pickup Engine: 4.1L L6 LPG; Position: Upper;.
