Set of 16 Elgin Hydraulic Flat Lifters for 1955-90 Buick, Cadillac, GMC, Olds, Pontiac engines per fitment chart. Has diameter of .842":

Oldsmobile Engines

260 CID (4.3L) 1975-1982

307 CID (5.0L) 1980-1985

330 CID (5.4L) 1964-1967

350 CID (5.7L) 1968-1980

400 CID (6.6L) 1965-1969 Except 1966-1967 F85 & 4-4-2

403 CID (6.6L) 1977-1979

425 CID (7.0L) 1965-1967 Except Toronado

455 CID (7.5L) 1968-1976

Pontiac Engines

316 CID (5.2L) 1956

326 CID (5.3L) 1963-1967

347 CID (5.7L) 1957

350 CID (5.7L) 1968-1977 Except 1969-1970 w/Ram Air IV, V, 303

370 CID (6.1L) 1955-1958

389 CID (6.4L) 1959-1966 Except 1963 w/3-2BC

400 CID (6.6L) 1967-1979 Except 1969-1970 Ram Air; Except 1967-1968 HP

421 CID (6.9L) 1963-1966

428 CID (7.0L) 1967-1969

455 CID (7.5L) 1970-1976

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