That happened at Mecum’s Indy 2024 sale in May when a Brewster Green 1973 Trans Am SD-455 four-speed sold for $260,000—the highwater mark for these in a public sale, that we know of.

This year alone, there have been instances of '74 Trans Am Super Duty 455 selling for over $100,000. The most exciting part of this Pontiac muscle car is its powerful engine. The SD 455 naturally ...