1970 GM Muscle Cars: Which One Looked The Best?

Picture of driver's side profile of a 1970 Buick GSX, 1970 Chevrolet Chevelle SS, 1970 Oldsmobile 442, and 1970 Pontiac GTO

If 1970 was the peak of the original muscle car era, these four offerings from General Motors must be considered some of the best muscle cars ever. All of them were hot performers. All of them looked great. But which one looked the best, inside and out?

Front three-quarter view of Saturn Yellow 1970 Buick GSX
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In choosing cars for comparison, I found four examples of what I consider each model’s pinnacle: top packages, lively colors (some may disagree with the green 442), and sporty wheels. And no vinyl tops. Although I think a Chevelle SS looks great with a black vinyl top, that is most likely a minority opinion.

In Buick’s case, that was the rare GSX in Saturn Yellow. Only 678 were built, and of those, 491 were Saturn Yellow, and 400 had the Stage 1 engine. With its black and red stripes, spoilers, hood mounted tach, and beautiful Buick rally wheels, it’s Buick’s most complete muscle car of the 1960s and 1970s, and one of its best-looking.

Picture of Cranberry Red 1970 Chevelle SS front three-quarter view
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The Chevelle SS with the LS6 454 (this one was originally painted Cranberry Red) is the postage stamp image of the term “muscle car.” If you ask a Chevelle fan what their favorite Chevelle is, odds are 2:1 that they’ll say it’s a 1970 LS6. The four-headlights, the Magnum 500 wheels, “Cowl Induction” hood, and over-the-roof stripes make the SS one of Chevy’s most attractive intermediates.

Front three-quarter view of Sherwood Green 1970 Oldsmobile 442
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Like Buick, Oldsmobile is sometimes given short-shrift in muscle car bench racing sessions, but that’s silly. The 1970 4-4-2 W-30 has a twin-scoop hood, menacing red fenderwells, Super Stock II wheels, and over-the-wheelwell stripes.

Front three-quarter image of Orbit Orange 1970 Pontiac GTO
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The GTO is the originator (although that argument is akin to determining who invented rock-and-roll), and it therefore still had that inertia in 1970. Other muscle cars were certainly faster (Pontiac seemed to be caught out by GM’s lifting of the 400-cubic-inch limit for intermediates in 1970), but the GTO looked as good as ever. Pontiac’s statement piece may have been an Orbit Orange “The Judge” Hardtop with Rally II wheels, spoilers front and rear, and a Ram Air hood.

Profile image of Saturn Yellow 1970 Buick GSX
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All 1970 GM intermediates had their hard points in common, such as a 112-inch wheelbase. They all had smooth roof-to-quarter-panel transitions (thanks, 1966 Toronado) and a low tail that looked much better on the coupes than it did the sedans, but the GSX’s rear spoiler improved that slight “droopiness” in the tail. The rear quarter windows were squared off at the rear, and the profile is broken up by a character line that bisects the wheelwell, while the stripe package does what stripe packages do—add a little pizazz.

Profile image of Cranberry Red 1970 Chevelle SS
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By comparison, the Chevelle is devoid of any stripes (on the sides, at least). There’s no spoiler to “raise the tail” either, but the Chevelle’s quarter window is nearly identical to the Buick’s; in fact, I’d say that that the Chevelle and GSX have the most in common of the four intermediates. However, the bodyside character line is higher on the Chevelle, and the fender and quarter panel “bulges” sit beneath them.

1970 442 1 BaT
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The Oldsmobile comes off as the most unique. Instead of a bodyline, the horizontal stripe divides the upper and lower body. The quarter windows are more rounded, like a boomerang, and who could miss the “flares” on the quarter panels? The fender breaks off into a dipping crease as it enters the door, which reminds me just a bit of a 1968 Dodge Charger, and the rear bumper hugs the quarter panel and forms a point at its farthest extent.

70 GTO 5 BaT
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The GTO has the most pronounced wheel arches, and Pontiac’s excellent styling department accentuated them with multicolored stripes on ‘The Judge.” The spoiler is much more pronounced than the GSX’s (and less likely to break someone’s fingers if they’re sitting on the quarter panel at the wrong time), “raising” the rear end visually. One problem with the Endura front bumper on these GTOs is that Pontiac didn’t include one in the rear, so there’s a lack of continuity there. No big deal.

Rear three-quarter view of Saturn Yellow 1970 Buick GSX
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From here, we can see the slightly coved rear window shared by all the A-Body coupes. They’re vaguely reminiscent of a 1967 Mercury Cougar (and thus the Lancia Flaminia). You can see why some people installed “mudflaps” on the rear quarter panels of early ’70s GM products, as they wrap inward severely behind the wheelwell, especially on the GSX. The GSX wore huge G60-15 tires, which help fill out the fairly large wheelwells that all A-Bodies have (at least visually).

70 LS6 3 BaT
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While the Buick’s rear quarter has a “break” in the wheelwell, the Chevelle’s higher bodyline means that the wheelwell wraps inward more gently. The rear bumper on SS models was broken up by a black trim piece and bookended by smaller taillights than you’ll find on the GSX.

1970 442 2 BaT
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The 4-4-2 rotates the taillights to a vertical position (it’s the only A-Body to have four of them), and I’ve always liked the way that Oldsmobile handled the exhaust outlets on the 4-4-2. The trunk lid has a more severe slope than the others, as the roof extends in a straighter line from the C-Pillar into the quarter panel.

70 GTO 3 BaT
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You can see the reverse curve in the quarter panel of the GTO, which makes it look a little flatter. The rear bumper houses the license plate like the others, but it does not extend to the bottom of the tail as it does on the 4-4-2 and GSX; instead, the quad-tipped exhaust runs through a valance panel.

1970 GSX 5 BaT
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While I intended this to be a comparison of exterior styling, there’s no reason not to move on to the engine compartments and interiors. All four cars have a Ram Air setup, and the GSX’s Stage 1 455 had chrome valve covers (and air conditioning, on this example). In January 1970, Motor Trend famously reported a 13.38-second quarter-mile time with a Stage 1 GS (at 105 miles per hour), which is one of the quickest times ever recorded from a stock muscle car. Other outlets scored times in the high-13s/low-14s, but even today, the Buick 455 is a consistent performer at the Pure Stock Muscle Car Drags. Not bad for an engine rated at 360 horsepower (and 510 lb.-ft. of torque).

70 LS6 5 BaT
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The LS6 454 in the Chevelle, however, holds the rated horsepower crown at 450, and it was no joke: Hot Rod flogged an LS6 to a 13.44-second quarter at 108.17 miles per hour. Car Life only managed a 14.57 at 99.77, but the potential was clearly there. The LS6 had chrome valve covers like the Buick, and I’ve always thought that the big-block Chevy was one of the better-looking muscle car engines, not to mention the fact that it has perhaps the cleanest-looking ram air setup.

1970 442 5 BaT
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The W-30 Oldsmobile wins the engine compartment competition hands-down simply due to the red wheelhouses. The aluminum intake manifold was standard equipment, as was the cold-air setup leading to a special fiberglass hood. In their May 1970 issue, Hot Rod hammered a W-30 down the quarter-mile in 13.98 seconds at 100.78 miles per hour; Car Life’s road test was close: 14.36 at 100.22. Non-power front disc brakes were standard on the W-30, but a power booster was optional with the automatic transmission only (seen here), as the cam on manual-transmission-equipped W-30s was apparently a little too lumpy for Oldsmobile to offer power brakes on stick-shift cars.

70 GTO 2 BaT
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Like the Buick and Oldsmobile, the GTO had chromed valve covers, but unlike the others, Pontiac’s hottest engine in 1970 was a 400. This example has the standard (in “The Judge”) 366-horsepower Ram Air III, but the 370-horsepower Ram Air IV was optional (a 360-horsepower 455 in what was basically a “straight out of a Bonneville” tune was optional in regular GTOs). In a Car Life road test, however, the torquey 455 was almost as quick as a Ram Air III: 14.76 at 95.94 vs. 14.60 at 99.55. While the Ram Air 400s were potent, most tests showed that they were a step behind their intramural competitors.

1970 GSX 4 BaT
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All four cars had interiors that were a little better for purposeful driving than their lower-level stablemates. The GSX had bucket seats, Buick’s beautiful “Rallye” steering wheel, woodgrain accents, and even power windows in the case of this car. Instrumentation was fairly complete, with the tachometer being where it probably doesn’t belong—on the hood.

The GSX was clearly designed to be a range-topper, something people came into the showroom to see but not necessarily buy. (As I mentioned, only 678 were built.) In all, 20,096 GSs were built in 1970, with 2,465 having the Stage 1 engine.

70 LS6 4 BaT
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The Chevelle had clear, round gauges, although the buckets and console were optional; otherwise, it looks much like a stock Malibu in here. The SS was popular in 1970, with 62,372 being produced (that number includes both Chevelles and El Caminos). Of those, a surprising 4,475 had the LS6 engine, not bad for a midyear release.

1970 442 4 BaT
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The Olds looks great: round gauges, a “Custom-Sport” steering wheel, woodgraining on the dash, buckets and console. Some won’t like the green, but I do. Oldsmobile sold 19,330 4-4-2s in 1970, with 3,100 being W-30s.

70 GTO 1 BaT
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The GTO was always lauded for its sensible gauge layout and attractive interiors. The 1970 model is a little monochromatic for my taste, but the woodgrain dash insert makes up for that to some extent. The gauge package surprisingly included some warning lights rather than gauges. The GTO was still popular in 1970, with Pontiac moving 40,149 of them (3,635 being “The Judge” hardtops).

1970 442 3 BaT

So which one looks the best? It would be a copout if I didn’t make a choice of my own, and being a diehard BOP guy in addition to a fan of the underdog, I think that (today) I’ll choose the W-30. It’s the most unique, it has a stylish interior, it has red wheelwells, and it looks great in Sherwood Green.

On another day, it might be the GSX. I love Buicks. On the other hand, I think the Chevelle SS is the quintessential muscle car; it looks like a muscle car should. And I’ve always had a thing for Two Lane Blacktop, so we can’t discount the Judge, either. Which one looks the best to you?

Related Reading

Vintage Car Life Road Test: 1970 Pontiac GTO 455 And 400 Ram Air – There IS A Substitute For Cubic Inches (by Aaron S.)

Chevelle SS or Malibu SS? – An Overview of Chevrolet’s Intermediate Super Sport (by Vince C.)

Curbside Classic: 1970 Buick GS Sport Coupe – The Strong, Silent Type (by me)