1970 was the pinnacle year for American Muscle Cars. The Buick GS 455 Stage One was crowned by Motor Trend as 'the quickest American Production Car we have ever tested.' The Stage One performance package added a hotter cam, larger valves, stronger valve springs, and revised carburetor jetting. 2,865 Grand Sport/Stage One's were manufactured at a unit cost of $3,578. The Gran Sport package added a mere $199 to the vehicle cost. The 455 V8 engine has 400 cubic-inches, develops 360 horsepower, and is capable of 0-60 miles per hour in 6.5 seconds.
Advertising slogan: 'Introducing Cars to Light Your Fire'
Motor Trend magazine called this 1970 Buick Stage One 'The quickest American production car we had ever tested.'
The Buick V8 engine produced 350 horsepower. In the optional Stage 1 trim it produced an underrated 360 horsepower and a stump pulling 510 foot-pounds at a low 2800 RPMs. Under-reported, the real horsepower number was more accurately 415 horsepower to 425 horsepower due to the larger valves and stronger cam.
Special factory Stage One modifications include a High Lift Camshaft, Four-barrel carburetor and low-restriction dual exhaust. Factory price for this automobile was $3,685.00 plus $199.00 for the Stage One package.Also photographed at :