GM var að fikta við ýmislegt þarna, td átti Oldsmo svaðalegan hreyfil sem fékk ekki líf;
Aluminum 4 valve 455 Hemi (OW-43)
The block was cast from Reynolds-356 alloy and fitted with pressed in dry steel cylinder liners for the forged 12.2 to 1 pistons. It used billet steel connecting rods and a machined forged steel crank.
The OW-43 was developed at the same time that Chevrolet released its all aluminum ZL-1 427 engine, but the Olds engine was far more advanced and exotic than the Chevrolet engine. It had a redline just under 8500 rpm, and put out 300 HP at 3000 rpm, and 600 HP at 6000 rpm. The top output recorded for this engine at the Lansing dyno facility was 700 REAL horsepower at 6800 rpm. Tests were run with both carburetion (four Weber 48-IDA two barrels) and injection (three-inch ram stacks), with injection showing the most potential over 6000 rpm.
Við getum þakkað tryggingarfélögum það fyrst og fremst að þessar stóru vélar fengust ekki framleiddar ásamt yfirvofandi mengunar reglugerðum á þessum tíma.
