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#SD-455

Engine bay detail of a 1973 Pontiac Firebird Trans Am SD-455 big block with round-port heads and shaker scoop
Car Features

The 1973-74 Super Duty 455

Mike Sullivan · · 6 min
A 1971 Ford Mustang Boss 351 in a static show view, one of the last real muscle cars of the era.
History & Heritage

The Last Real Muscle Cars (1971-1974)

Patrick Walsh · · 6 min