The Buick GSX was among the last of the proper muscle cars to leave the scene. In 1971, 124 units were ordered, but production records don’t detail how many came with the 350-cube V8 (the 5.7 ...

Although Buick introduced the Gran Sport GSX in 1970, in the final years of the muscle car era, this car's presence was noticed by the brand's fans and by its competitors on drag strips. While the ...

Buick's GSX badge wasn't just about power - it marked a bold shift in identity, blending muscle car performance with upscale refinement.

This American powerhouse wasn't the only surprise beast to come from Buick, though it set the stage moving forward for all muscle cars.

Check out Todd Miller's 1970 Buick GSX with the classic exterior musclecar image but with performance closer to a Corvette - Car Craft Magazine ...

We're watching as a 1971 Plymouth Duster 340 and 1970 Buick GSX duke it out on the drag strip in the following video. Which muscle car will come out on top?

Oldsmobile 4-4-2 W-30 versus Buick GS 455 Stage 1, A-body brothers each considered the “gentleman’s musclecar.” Sibling rivals when GM divisions competed.

In this video, a 1970 Chevy Chevelle SS454 races a 1970 Buick GSx 455 Stage 1 during an amateur pure stock drag racing event held at Mid Michigan Motorplex.

Buick engineers stuffed a torquey, 455-inch mill into the Gran Sport, then upped the ante with an appearance and handling package that turned the GS455 into the GSX.

The fitting tribute came in 1970 when General Motors gave the green light to a 455-inch GS, with an even faster GSX model available for the ultimate thrill seeker. Two 455s were available, notably ...

As for pricing, a show-quality, fully restored 1970 Buick GSX will run $30,000 plus. Expect to pay $24,500 for the Stage I, $18,500 for the GS 455, and around $15,000 for the GS350.

Coming correct with a gigantic 455 cid V8 and a Hurst four-speed, the GSX had all the grunt any self-respecting son of the seventies needed. Power figures are elusive and confusing.