1964 Chevrolet Chevelle Engine: 3.2L L6; Carb MFG: C-1; Carb Model: YF;. 1964 Chevrolet Chevelle Engine: 3.8L L6; Carb MFG: C-1; Carb Model: YF;. 1967 Chevrolet Chevelle Engine: 3.8L L6 GAS Naturally Aspirated;FuelSystem: CARB; Carb MFG: C-1; Carb Model: YF;.