340252
0.679 COVER, Clutch Housing
Applications per the 1953-1982 Corvette parts catalog effective November, 1981
78-81 Y (350) W/M.T.
Applications per the 1976-81 Chevrolet parts catalog effective date July, 1986
76-78 ALL (350) W.M.T.
76-81 F (305) W/M.T.
76-79 X (305) W/M.T.
79-81 F (350) W/M.T.
Applications per the 1976-81 Oldsmobile  parts catalog effective date July, 1987
77-79  X (305) W/M.T.
Applications per the 1976-81 Buick parts catalog effective date July, 1987
No listing
Applications per the thru 1975 Chevrolet  parts catalog effective date April, 1983

Applications per the Thru 1975 Oldsmobile  parts catalog effective date April, 1982
No listing
Applications per the Thru 1975 Pontiac  parts catalog effective date October, 1977
No listing

Applications per the thru 1965-1972 Buick  parts catalog

Applications per the 1962-1970 Chevrolet  parts catalog effective date October 1, 1970

Applications per the 1938-1965 Chevrolet parts catalog effective date October 1, 1964
No listing
Applications per the 1973-1978 GM Light Trucks parts book effective February, 1985


Disclaimer:
 
Factory correct applications are your responsibility. GM made part and part # changes with no rhyme but a reason (no production interruptions at any cost).
Application charts and part numbers are for replacement parts that were available at the time of parts book printing.
My observations come from the parts I have in my collection or other reliable sources your parts may differ.
If Factory correctness is your goal, do more research, join car clubs,
 forums and buy an assembly manual if one is available for your Project Car (you won’t be sorry).
This is a fun and interesting part of the hobby!