Until then, the Buick's bread-and-butter V8 line from the early 1950s and ... were replaced by a bored-out version of the ...

Buick also offered a slightly less serious GS trim line, which was available with the same 455 ci V8 engine as the GSX. This engine came with a Stage 1 option, which consisted of a higher 10.5:1 ...

General Motors’ divisions had plenty of firepower to showcase, what with the GTO and its Judge newcomer, the Hurst/Olds 455 and the ... classic muscle Buick without the engine and transmission ...

Introduced in 1970 and built in only a few hundred units through 1972, the Buick GSX is one of ... which included a 455-cubic-inch (7.4-liter) V8 engine with a 10.5:1 compression ratio, larger ...

Equipped with the automaker’s 455 V8 engine, the Buick GSX was capable of up to 360 horsepower and a whopping 510 pound-foot of torque. The GSX was a direct competitor of cars like the GTO and ...