This listing is for a brand-new brass freeze plug kit and a Cam Bearings set compatible replacements for the following 8 cylinder small and big block Pontiac engines which were also used by GM in some Buick and Oldsmobile vehicles. 

Freeze plugs contain: (8) 1 61/64" brass cup style freeze plugs (1) 2 1/16" steel cup style freeze plug (1) 15/16" steel cup style freeze plug (2) 9/16" steel cup style freeze plug (2) 3/8" NPT steel pipe plugs. 

326 CID (5.3L) 1963-1967, 

350 CID (5.7L) 1968-1977, 

389 CID (6.4L) 1959-1966,

400 CID (6.6L) 1967-1979, 

421 CID (6.9L) 1963-1966, 

428 CID (7.0L) 1967-1969 

& 455 CID (7.5L) 1970-1976 Engines.