Compatible With Chevy GMC truck 7.4L 454 Engine,1972-1974 Buick 350-455 8-Cylinder Engines, Compatible With 1978 Chevy 454 gmc, 1968 Pontiac Firebird 6.6L etc. It fits 1967 1968 1969 with 429 472 & Pontiac 1968-1969 Firebird gto with 250 6cyl overhead cam engine and those with the 350, 400 and 428 V8 engines.
