Pontiac Built 3,196 Trans Ams in 1970 — Only 88 Buyers Got the Engine That Actually Lived Up to the Name

A 1970 Pontiac Trans Am looks the same whether it packs the common 345-horsepower Ram Air III or the ultra-rare 370-horsepower Ram Air IV, but Pontiac built only 88 of the engine that actually earned the car its racing name. Here’s the one-year rule change that made both possible.

Pontiac built only 3,196 Firebird Trans Ams for the 1970 model year, and of those, a mere 88 buyers checked the box for the engine that was actually supposed to define the car. Most owners drove home with the standard Ram Air III, a strong 345-horsepower 400 that plenty of fans still mistake for the top option. GM had spent years refusing to let any of its intermediate and pony cars wear an engine bigger than 400 cubic inches, and the moment that corporate rule finally cracked for 1970, Pontiac used the opening to build its most race-bred Trans Am yet — then made it rare enough that most enthusiasts have never actually seen one drive by. A surviving Lucerne Blue example recently got exactly that kind of attention, cruising through Wisconsin’s Kettle Moraine State Park with a Pontiac specialist behind the wheel explaining precisely what separated the 3,108 ordinary 1970 Trans Ams from the 88 that weren’t.

A Wisconsin Drive Through the Car GM Almost Didn’t Allow

The video comes from The Throttlestop, a classic car dealership in Wisconsin, where Pontiac specialist Mike Janotta takes a 1970 Trans Am finished in Lucerne Blue out for a drive through Kettle Moraine State Park at the peak of fall color. Rather than treating the car as a static showroom piece, Janotta walks through the exterior, interior, and underside while actually putting the car through its paces on real roads — the kind of hands-on inspection that matters far more than a glossy studio shot when you’re trying to understand what a 56-year-old muscle car is actually like to live with day to day.

Along the way, he gets into the detail that gives this particular Trans Am its significance: the engine underneath that shaker hood scoop, and the corporate history that determined which engine a 1970 buyer could actually get. It is a more substantive angle than most drive-by videos bother with, and it is the reason this one is worth a closer look rather than a quick scroll past.

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The Rule GM Finally Broke for 1970

For most of the 1960s, General Motors enforced an internal corporate policy capping engine displacement at 400 cubic inches in its intermediate and pony-car lines — the Trans Am included. The restriction dated back to a more cautious era inside GM, one that had nothing to do with what the cars could physically handle and everything to do with internal politics between divisions competing for the same buyers. By the time the all-new second-generation Firebird arrived for 1970, the rule was already out of step with what Pontiac, Chevrolet, and their rivals were building elsewhere in the lineup. GM finally dropped the restriction for the 1970 model year, and Pontiac did not waste the opportunity.

The standard engine became the 400-cubic-inch Ram Air III, rated at 345 horsepower and 430 lb-ft of torque — a serious engine by any measure, and the one that powered the vast majority of the 3,196 Trans Ams Pontiac built that year. But buyers willing to pay extra and wait could order the Ram Air IV, a more aggressive version of the same 400 with round-port heads, a higher-lift cam, and 370 horsepower on paper — figures that most enthusiasts agree undersold what the engine could actually do at the drag strip. Pontiac built only 88 Ram Air IV Trans Ams for 1970, and just 29 of those were paired to an automatic transmission rather than a four-speed. Against the roughly 1,769 Ram Air III four-speeds alone, the Ram Air IV represented less than three percent of total production — by far the rarer and more serious engine wearing the exact same Trans Am badge on the same body.

That window did not last long. For 1971, GM’s displacement ceiling disappeared entirely across the board, and the 455-cubic-inch V8 became the Trans Am’s new standard engine in 335-horsepower HO form — a bigger, torquier motor that made the 400-based Ram Air lineup obsolete almost overnight and retired the Ram Air name from the Trans Am for good. That makes 1970 a strange, narrow moment in Trans Am history: the one year GM’s old 400-inch ceiling and Pontiac’s most aggressive 400-inch engine existed at the same time, inside the same car, separated only by which option box a dealer happened to check on the order form.

Why Pontiac Bothered Paying for the Name

The Trans Am name was not a marketing invention — it was licensed, literally, from the Sports Car Club of America’s Trans-American Sedan Championship, and Pontiac paid the SCCA a flat $5 royalty for every single car that wore the badge, a fee GM kept paying on Firebird Trans Ams for decades afterward. That mattered because the second-generation Firebird that debuted for 1970 was designed from the start to look and feel like it belonged on a road course, not just a drag strip. The nameplate itself had launched in low volume for 1969, when Pontiac built just 689 hardtops and eight convertibles on the outgoing first-generation body — a near-experimental run that gave almost no indication the Trans Am would still be a headline car more than half a century later.

The shaker scoop itself is worth a second look on a car like this one. Unlike the hood-mounted scoops on rival muscle cars of the same era, the Trans Am’s shaker bolted straight to the top of the air cleaner and poked through a cutout in the hood, which meant the entire scoop physically shook side to side with the engine at idle — hence the name. It was a genuinely functional piece of ductwork feeding cooler outside air directly into the carburetor, not a styling add-on, and it is one of the easiest ways to spot a real Ram Air car from across a parking lot. On a four-speed Ram Air IV car, that shake at idle was reportedly even more pronounced than on the more common Ram Air III, thanks to a more aggressive cam grind underneath it.

The 1970 redesign changed that trajectory for good. It introduced the Endura nose, a urethane front end that could flex and recover from minor impacts; the functional shaker hood scoop, which bolted directly to the air cleaner rather than the hood itself and visibly vibrated with the engine at idle; and a decklid spoiler that announced exactly what kind of competition the car was built to answer on paper, even if Pontiac’s actual factory-backed Trans-Am racing effort stayed modest. Every one of those details was aimed at a buyer who wanted the car to look as serious as its engine options actually were.

Why This Generation Still Stops Traffic Today

Viewers in the comments keep circling back to how modern the shape still looks more than five decades on, and more than one notes that the Lucerne Blue paint on this particular car reads differently outside than it does against the interior trim — the kind of detail that only shows up when you see a real survivor in daylight rather than under studio lighting. One commenter recalled watching a blue Trans Am exactly like this one get delivered to a Pontiac dealership in 1970 on his way home from school, a reminder that these cars were ordinary showroom traffic once, long before they became the six-figure collector pieces the rarest Ram Air IV cars command today. Several others pointed out that the 1971 455 HO that replaced this engine lineup was, in their words, one of Pontiac’s genuine performance high points — just arriving one model year too late to share the stage with the car in this video.

That combination — a body that still photographs like something new, an engine story with a genuine beginning and end, and production numbers thin enough that most fans have never stood next to the rare version — is exactly why the 1970 Trans Am keeps showing up in driveways, dealer inventories, and videos like this one more than fifty years after Pontiac built it. It is a car whose entire identity was shaped by a rule that existed for only one model year, which may be the most interesting thing about it.

Watch the full video above and let us know your thoughts in the comments.