6.9L / 421 OHV V8 16V Pont. 4.094" Bore 63-66
GM
7.0L / 428 OHV V8 16V Pont. 4.120" Bore 67-69
GM
7.5L / 455 OHV V8 16V Pont. 4.150" Bore 70-76
GM
GM421C-PO | 6.9L / 421 OHV V8 16V Pont. 4.094" Bore 63-66
PONTIAC
GM428C-PO | 7.0L / 428 OHV V8 16V Pont. 4.120" Bore 67-69
PONTIAC
GM455C-PO | 7.5L / 455 OHV V8 16V Pont. 4.150" Bore 70-76
PONTIAC