Pontiac Trans Am 455 SD
By 1974, almost all muscle cars were extinct from the market, and those who were left were robbed of their power and style. However, one model managed to survive and offer as much performance and power as possible, and that model was the ’74 Trans Am Super Duty 455 (via Auto Week).
The year 1974 marked the first restyling of the whole Firebird range, and with a new front and rear end came the improved interior and details. The SD 455 model was a carry-over from 1973, but in the new package, it featured better suspension and brakes. The standard 455 V8 had only 215 HP, but it developed 290 HP in SD trim, which was fantastic for 1974.