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Only 678 Buick GSX Stage 1 models left the factory in 1970, and this Saturn Yellow 4-speed is one of them — a 360-horsepower, 510 lb-ft muscle car that Motor Trend clocked at 13.38 seconds in the quarter mile, its fastest test of the entire year. One former owner kept this exact combination for twenty years. See what made Buick’s forgotten muscle car a legitimate contender.
A 1970 Buick GSX in rare Apollo White just went through MCACN’s five-hour Vintage Certification process — one of only 187 built in that color, and one of just 32 with California emissions. Host Dan Vasic walks through what separates a genuinely original survivor from a car that’s been quietly refreshed. The GSX’s story turns out to be as much about engineering as paint.
A Buick GSX built during a five-month factory window in 1970 raises a genuine documentation question for its current owners — one that even a close look at the car’s trim and colors can’t fully settle. Its Stage 1 engine option carried an official rating widely considered too conservative for what the car could actually do. Here’s the open question at the center of this particular GSX.
Buick’s Grand Sport looked like just another understated mid-size coupe, but hidden under the hood was a factory horsepower rating that dyno testing proved was flat-out wrong. From the 401-cubic-inch nailhead that skirted GM’s own displacement rules to the Stage 1 package that quietly outran its own spec sheet, the Grand Sport built a reputation on performance nobody advertised. Read on to find out how Buick kept one of its quickest cars a well-kept secret for six model years.
Erika Perrye had only owned her 1970 Buick GSX for a few months when Lou Costabile caught up with her and husband Bob in Lake Zurich, Illinois — but she already had strong opinions on why Buick’s most overlooked muscle car beats the obvious choices. Finished in bold Saturn Yellow with the torque-heavy 455 V8, this GSX is one of the rarest performance cars Buick ever built. Find out how a rare yellow Buick turned her into a genuine muscle car fan.
Ask ten muscle car fans to name the greatest of all time and you will get eleven answers and one argument. A reader poll settled it once, and the results are stranger than you would expect: the car that finished first was never designed to race, and the car with the highest horsepower rating finished second. Read on for the full countdown and the numbers behind each placing.
Motor Trend tested a great many muscle cars during the genre’s peak years, and in 1970 it handed a title to a car almost nobody expected: the quickest stock quarter-mile machine the magazine had ever run. It was not a Hemi or a Boss. It was a Buick, from a brand associated with country club parking lots, and its advertised horsepower figure was the least interesting number on the sheet.