Oldsmobile: 1968-70 all B & C body models with 455-4V / automatic transmission / high compression / no air conditioning, 1971 all B & C body models with 455-4V / automatic transmission / low compression / no air conditioning, 1972 all A body models with 455-4V / manual transmission / low compression / W-30 / W-37, 1974 all B & C body models with 455-4V / automatic transmission / low compression / with air conditioning