Pontiac’s Stolen Ford Engine Design Backfired Spectacularly

Pontiac was so desperate to solve an engineering problem in the late 1960s that it straight-up copied Ford‘s homework—and it backfired so badly the engine never saw a production car. The Ram Air V was supposed to be the crown jewel of the muscle car era, a technological marvel that would cement Pontiac’s dominance. Instead, it became a forgotten footnote, killed by the very shortcut that was supposed to save it.

The Ram Air Legacy That Started It All

Pontiac’s Ram Air induction system was legendary long before the Ram Air V even existed. The concept debuted in 1965 as a dealer-installed performance package for the GTO’s 389-cubic-inch V8, featuring a sealed metal pan with foam gaskets that forced cool outside air through hood scoops directly into the carburetors. It was simple, effective, and it made Pontiac muscle cars insanely desirable—the kind of thing collectors still hunt for today.

Over the next few years, Pontiac refined the system through three more iterations: Ram Air II, III, and IV. Each one pushed more air into the engine, extracting more power in the process. By the late 1960s, Ram Air had become shorthand for serious performance. But Pontiac had hit a wall.

The Pushrod Prison

The problem was architectural. Pontiac’s V8 engines used pushrods to operate the intake valves, which meant those long metal rods had to pass through the cylinder head where the intake ports sat. To accommodate the pushrods, Pontiac’s intake ports were shaped like the letter D—narrow, limited, geometrically constrained by the mechanical realities of the design.

Engineers wanted to enlarge those ports to cram even more air into the cylinders, especially for the new H.O. and Super Duty variants they were developing. But the pushrods were in the way. It was the kind of engineering catch-22 that kills projects: the solution was incompatible with the architecture.

Instead of redesigning the entire engine family from scratch—which would have been expensive and time-consuming—someone at Pontiac got a truly audacious idea: steal Ford’s answer.

How Pontiac Borrowed More Than Just Inspiration

George DeLorean, the brother of the famous John DeLorean, was doing engine development work for Pontiac while also managing a drag racing contract with Ford. During his work with Ford, he discovered something interesting: Ford’s engines had solved the exact problem Pontiac was facing. Ford’s engineering approach used round intake ports instead of D-shaped ones, which allowed vastly more airflow.

The key difference? Ford simply ran the pushrods straight through the center of the intake ports instead of trying to avoid them. Elegant. Simple. Effective. George pulled strings with his Ford contacts and got his hands on one of Ford’s cylinder heads. He immediately called his brother John—then working as a legendary figure at Pontiac—who assembled a team of engineers: Steve Malone, “Mac” McKellar, Tom Nell, and Bill Klinger.

What happened next was pure corporate espionage. The Pontiac engineers photographed and measured Ford’s design, then made molds of the cylinder head before returning it. Back at Pontiac, they reverse-engineered their own version, internally calling it the “Tall Port” head. The design worked—in theory. In practice, it created a disaster.

Too Much of a Good Thing

The Tall Port design did exactly what it was supposed to do: it allowed vastly more air into the cylinders than any previous Ram Air engine. Pontiac had finally solved the pushrod problem. But in solving one problem, the engineers created another that no amount of regulatory creativity could fix.

At just 400 cubic inches of displacement, the engine simply couldn’t inhale all that air efficiently. The ports were sized for massive powerplants running at peak rpm, but at lower speeds and in smaller engines, the extra air just sat stagnant in the ports, doing nothing. Worse, it actively robbed the engine of low-end torque—the kind of power you actually feel driving a muscle car on the street.

The 303-cubic-inch variant was even worse. Pontiac’s engineers realized the Tall Port heads would only work properly on much larger displacement engines—ones they hadn’t even built yet. By the time they figured out a real solution, the decision had already been made at the corporate level: kill the program.

The Engine That Never Was

Pontiac built a few hundred Ram Air V engines in both 303 and 400-cubic-inch configurations, but every single one was a prototype destined for the development vault. None of them ever made it into a production car. None of them ever made it to a dealer showroom. None of them ever felt the acceleration they were designed to deliver.

The Ram Air V 400 was supposed to be Pontiac’s magnum opus—the most formidable engine of the classic muscle car era. Instead, it became a what-if, a museum piece, a lesson in how even brilliance can be derailed by one wrong architectural decision made decades earlier. Pontiac’s attempt to borrow greatness from Ford ended up being a expensive lesson in why you can’t just copy someone else’s homework and expect it to work in your own classroom.

The irony is brutal: by trying to shortcut their way to victory, Pontiac sabotaged themselves. The stolen design worked perfectly for Ford because Ford had built their entire engine around it. Pontiac’s attempt to graft it onto their existing pushrod architecture was engineering malpractice dressed up as innovation. In the end, neither the espionage nor the clever engineering could overcome the fundamental incompatibility between a new solution and an old design philosophy. The Ram Air V died before it could ever prove itself, killed not by competition from rivals but by its own internal contradictions.

Sources: Jalopnik