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The Buick Grand Sport was introduced in 1965 as Buick's answer to Pontiac's GTO. Although the Buick had a larger engine, 401 cid as opposed to Pontiac's 389, the Pontiac out performed it. By 1970, the Buick GS reached the pinnacle of muscle car development with a 455 cid Stage 1 engine producing the most advertised torque of any car: 510 ft-lbs @ 2800 rpm. Coupled with the bold yellow-and-black or white-and-black color schemes, this was one Buick that didn't go unnoticed.

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Buick Buick didn't produce a wide variety of muscle cars, but they did make some of the best.	Buick Grand Sport The Grand Sport was Buick's classic muscle car, a mid-sized car with a big engine, up to 455 cubic inches.	Buick GSX The GSX package added bold graphics and performance enhancements to Buick's Grand Sport line.
Buick Stage 1 For an extra boost in performance, the Stage 1 option added a host of modifications to an already strong engine.	Buick Grand National The Buick Grand National was a modern-day interpretation of the classic muscle car, utilizing a turbocharged V-6 instead of a V-8.	Buick GNX The ultimate mid-eighties muscle car, the intercooled, turbocharged Buick Grand National GNX was faster than the contemporary Corvette.
Buick Wildcat The Wildcat was Buick's luxury-sports car produced from 1962 until 1970.	350 Buick's "little" V8 produced more torque than many much larger displacement engines.	400 Buick's big block 400 was an impressive performer, especially in Stage 1 trim.
455 Can you say torque? 510 foot-pounds of stump-pulling power made Buick's 455 an engine to be respected.