Engine VIN code Y. Use flat followers.
5.0L / 307 OHV V8 16V "Y,9" Olds. 3.800" Bore 80-90
GM
5.7L / 350 OHV V8 16V Olds. Gas 4.057" Bore 68-80
GM
6.6L / 403 OHV V8 16V "K" Olds. 4.351" Bore 77-79
GM
GM307C-OL | 5.0L / 307 OHV V8 16V "Y,9" Olds. 3.800" Bore 80-90
BUICK,
CADILLAC,
OLDSMOBILE,
CHEVROLET,
PONTIAC
GM350CE-OL | 5.7L / 350 OHV V8 16V Olds. Gas 4.057" Bore 68-80
BUICK,
CADILLAC,
OLDSMOBILE
GM403C-OL | 6.6L / 403 OHV V8 16V "K" Olds. 4.351" Bore 77-79
BUICK,
OLDSMOBILE,
PONTIAC