1975 GMC C35 Engine: 5.7L V8;EngineVIN: V; FuelSystem: 2BBL; 2 Bore Gasket; Open throttle bores;. 1976 GMC C35 Engine: 5.7L V8;EngineVIN: V; FuelSystem: 2BBL; 2 Bore Gasket; Open throttle bores;. 1978 GMC C35 Engine: 5.0L V8; 2 Bore Gasket; Open throttle bores;.