1974 Chevrolet El Camino Engine: 5.7L V8;FuelSystem: 4BBL; 4 Bore Gasket; Open plenum;. 1974 Chevrolet El Camino Engine: 6.6L V8; 4 Bore Gasket; Open plenum;. 1975 Chevrolet El Camino Engine: 5.7L V8;EngineVersion: Chevrolet; EngineVIN: L; 4 Bore Gasket; Open plenum;.
