Pontiac Trans Am SD-455: Did Pontiac Save its Best Muscle Car for Last?
That the SD-455 was produced at all was a miracle, given how quickly high-performance became politically incorrect by the early 1970s. Installing it in the Firebird was another challenge because the F-Body line was very nearly canceled after 1972. Sales for ponycars dropped precipitously as younger buyers sought more fuel-efficient cars. Consequently, Firebird sales plunged more than 56 percent between 1971 and 1972, to less than 30,000. Only 1,286 of them were Trans Ams.
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