A 1970 Buick GS 350 four-speed just sold for $19,900 with a Hurst shifter and ram air hood intact. It carries the most powerful small-block Buick ever built and a name almost everyone gets wrong – here’s the real story and what to check before buying one.
Buick built its single most powerful small-block V8 ever in 1970, dropped it into a car most enthusiasts still call by the wrong name, and then killed the engine after just one model year when emissions rules tightened. The car in question is a GS 350 four-speed that recently sold out of Maple Motors in Hendersonville, Tennessee — Hurst shifter, ram air hood, dual exhaust, and a factory rating that came within 45 horsepower of Buick’s legendary Stage 1 455. Most people browsing the listing called it a “Skylark Gran Sport.” Buick never called it that. Here is the real story of the car, why the naming confusion persists, and what to know if you’re shopping for one.
Why “Skylark Gran Sport” Is the Wrong Name for This Car
Say “Gran Sport” to a Buick fan and most people picture the badge on a 1965 Skylark. That’s fair — Buick launched the Gran Sport as a Skylark option package in 1965. But by 1967, Buick had already dropped the “Gran Sport” name in favor of the shorter “GS,” and just as importantly, it spun the GS off into its own standalone model line rather than leaving it as a Skylark trim. From that point through 1972, if you wanted a GS, you ordered a GS — not a “Skylark GS.” The Gran Sport name didn’t return to Buick’s lineup until 1973, on a completely different platform. A 1970 example carrying GS 350 badges wasn’t a dressed-up Skylark at all; it was its own model, built and coded as such on the assembly line, with a distinct VIN sequence to prove it.
It’s an easy mistake to make, and even seasoned sellers repeat it in listing titles because “Skylark” is the more recognizable name to search for. But the distinction matters to anyone shopping for one: GS-specific trim, options, and factory paperwork won’t always cross-reference cleanly with Skylark parts catalogs, and knowing the car’s real lineage helps separate a correctly documented GS from a later clone wearing borrowed badges.
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The Engine Buick Only Built for One Year
Underneath the ram air hood sits Buick’s 350-cubic-inch V8 in its highest state of tune — a four-barrel version factory-rated at 315 horsepower and 410 lb-ft of torque. That output made it the most powerful small-block V8 Buick ever produced, and it existed only for the 1970 model year. Tightening emissions standards forced Buick to pull the high-compression version for 1971, which means a numbers-matching 1970 GS 350 is the only way to get that specific combination in a Buick showroom car. For context, it landed just 45 horsepower shy of the 455 Stage 1 that gets most of the magazine coverage, while carrying noticeably less weight over the front wheels — a genuinely different driving character from its big-block sibling, not just a budget alternative to it.
The GS 350 sat at the entry point of a lineup that climbed all the way to the GS 455 Stage 1, the engine that quietly held America’s production-car torque record — 510 lb-ft — for over three decades before the Dodge Viper finally topped it in the 2000s. Buick built only a few thousand Stage 1 cars that year, and history has mostly credited Chevrolet, Pontiac, and Mopar with the muscle car era’s loudest headlines. Buick’s reputation for comfort and trim worked against the GS getting the same folklore, even though the numbers backed it up. The GS 350 never chased that torque record, but it inherited the same engineering seriousness and the same low-key badge that kept the whole lineup out of the spotlight it arguably deserved.
Buick built roughly 9,948 GS 350 hardtops for 1970, and the overwhelming majority left the factory with automatic transmissions. A four-speed car with the factory Hurst shifter, like the one featured in Maple Motors’ walkaround, represents a small slice of that already modest production run — precise four-speed-specific GS 350 counts are harder to pin down than some listings suggest, but the shift pattern alone tells you this isn’t the car most 1970 GS 350 buyers drove home.
What to Look For If You’re Shopping for One
Beyond the four-speed and Hurst shifter, this particular car carries the details GS 350 buyers should learn to spot: power steering, dual exhaust, aftermarket gauges, the factory ram air hood and air cleaner setup, and 14-inch Rally wheels. Early-production 1970 GS cars also have small build tells worth knowing — a clear plastic coolant overflow tank and a specific radiator support brace among them — that help separate correctly documented cars from cars that have been reshuffled with parts over the decades. None of those details are GS-exclusive on their own, so a confident seller should be able to walk you through the VIN sequence, not just point at the badges.
That documentation matters more with this model than most, because GS 350s and GS 455s have long been popular donor cars for GSX tribute builds. The GSX package was a mid-year, low-volume option in 1970, and its rarity has made GSX clones common in the hobby — meaning a well-preserved, honestly represented GS 350 like this one is arguably a more trustworthy buy than an unverified “GSX” with murky paperwork. Buyers who want the real Stage 1 or GSX experience should budget time for VIN decoding and documentation before writing a check, not just admire a good-looking badge.
On the practical side, the 350 small-block is generally easier and cheaper to service than the 455 big-blocks that headline most GS auction coverage, and parts support across the Buick small-block family remains solid decades later. That combination — genuine one-year-only performance spec, honest documentation, and a drivetrain that doesn’t punish you at the pump or the parts counter — is exactly why patient shoppers still hunt down clean GS 350s instead of chasing the more expensive, more heavily cloned 455 cars.
Values for clean, documented GS 350s have climbed steadily as buyers priced out of 455 and Stage 1 cars look for an authentic period-correct alternative that still delivers a four-speed, factory-rated 300-plus-horsepower experience. A car like the Maple Motors example — sold at $19,900 with the manual gearbox and Rally wheels intact — sits well below what a comparable GS 455 or GSX would command, which is exactly the gap that makes the 350 the smarter entry point for a first-time GS buyer rather than a compromise.
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