The 1974 Trans Am Super Duty 455 is valued at over $50,000 for fair condition, near $90,000 for excellent condition, and up to $111,000 for concourse condition. The Trans Am Super Duty 455 has a ...

For now, the Trans Am had to stick with the last place in the lineup, accounting for 10,255 Firebird orders. The 400 and the 455 were the preferred options, each getting over 4,600 orders.

The Trans Am was already growing steadily, but the 1976 release was all kinds of successful, as deliveries increased 70% from 1975 ... The more expensive L75 455, which no longer used the HO ...

Emissions regulations may have been taking the muscle out of a lot of seventies muscle cars, but Pontiac still managed to ...