May 1, 2007 · Long story short, the LS6 engine in the SS had higher compression (11.25:1) than the standard LS5 454, giving the top Chevelle the highest factory horsepower rating of any muscle car. 450 big ...

Apr 13, 2015 · So not too long ago (2 months ago) I had to sell my beloved 1969 Buick GS 400. 66k miles, ALL ORIGINAL EVERYTHING right down to the headlight bulbs and everything. The most i could get out of it was $12,000 which is absolutely RIDICULOUS!!!

Mar 21, 2025 · Back to the drag race from the Mid Michigan Motorplex strip: the gross-rated 1969 Buick GS400 and its 3.31 highway gears take on the net-rated 1974 Chevelle 454. The Tri-Shield has the weight...

Feb 25, 2022 · In Stage 1 trim, the Buick GS 455 was the fastest muscle car, when it came out, beating even the mighty Hemi Cuda. Its 7.4-liter V-8 engine is conservatively rated at 360 horsepower at 4,600...

The most powerful muscle car of the 1970s technically came from Buick, as the automaker built two prototypes for its 1970 GS 455 with a Stage 2 performance package. As an even more potent...

Apr 2, 2025 · 1969 brought forth an avalanche of specialty muscle cars in the wake of the 1968 Road Runner debut. From Dodge’s Super Bee to Chevrolet’s COPO Chevelle 427s and from the Pontiac GTO Judges to ...

Mar 17, 2025 · Those numbers may not appear to be competitive against a 425-hp 426 Hemi or a 450-hp LS6 Chevelle SS 454, but with 510 lb.-ft. of torque, the Buick GS 455 Stage 1 could match — and even beat ­— a Hemi GTX or a SS 454. On lists of the fastest muscle cars of all time, Stage 1-equipped 1970 Buick GS 455 cars always rank at or very near the top.

Dec 1, 2024 · In 1970, General Motors broke new ground by introducing a series of powerhouse engines, including the Chevelle 454, Pontiac 455, Oldsmobile 455, and Buick 455 V8s – each one delivering a staggering amount of torque.

Mar 3, 2025 · Muscle cars were all the rage in 1969, especially with mid-size automobiles. Over at General Motors, you had the Pontiac GTO, Chevy Chevelle SS, Oldsmobile 442, and Buick’s Gran Sport (or GS). The GS was the most opulent of …

Nov 30, 2024 · Today, it’s a one-of-one 1970 Buick GS 455 Stage 1 automatic convertible survivor with the Gulfstream Blue livery and white interior. About that last bit – it’s not exactly befitting to put the...