COMP Cams Front Cover Chevy 265-400Eliminate timing cover flex which causes erratic ignition timing. Allow Camshaft to be replaced without disturbing the oil pan Seal. Simple endplay adjustment with dial indicator access hole. Integrated timing pointer simplifies ignition timing checks. Compatible with all water pumps and most Gear drives. Catalog User 1 This Part Fits: Year Make Model Submodel 1977,1980 Buick Century Base 1977 1979 Buick Century Custom 1980 Buick Century Estate 1978