The discretionary 455 had the same appraised power (despite the fact that at a crest of 3,600 rpm), however considerably more torque. The vast majority of the drop was inferable from the new evaluating framework (which now mirrored a motor in as-introduced condition with suppressors, embellishments, and standard admission). The motors were moderately minimal changed from 1971.
An extremely uncommon choice was the 455 HO motor, basically like that utilized as a part of the Trans Am. It was evaluated at 300 hp (220 kW) at 4,000 rpm and 415 lb·ft (563 N·m) at 3,200 rpm, likewise in the new SAE net figures. Regardless of its humble 8.4:1 pressure, it was as solid the same number of prior motors with higher gross force evaluations; yet like all other 1972-model motors, it could perform on low-octane consistent leaded, low-lead or unleaded fuels. Just 646 autos with this motor were