1973 Chevrolet Chevelle Engine: 5.7L V8;EngineVIN: H; Carb MFG: R-4; Carb Model: 4MV;. 1973 Chevrolet Chevelle Engine: 5.7L V8;EngineVIN: K; Carb MFG: R-4; Carb Model: 4MV;. 1973 Chevrolet Chevelle Engine: 7.4L V8;EngineVIN: Y; Carb MFG: R-4; Carb Model: 4MV;.
