Morgan Plus 4 – 1966 images

This 1966 Morgan Plus 4 still uses a wood-framed body and a Triumph-sourced four-cylinder engine, built the same way Morgan had built cars since 1950. It’s proof that hand-built simplicity found its own audience even during Detroit’s V8 arms race. Here’s the story behind Morgan’s stubbornly old-fashioned approach to performance.

1966 Morgan Plus 4
4-Speed Manual

MCF thanks Gateway Classic Cars for the images provided here.

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While Detroit was racing to stuff ever-bigger V8s under longer hoods, one small British workshop kept building cars the exact same way it had since the 1930s, and somehow, that stubbornness became the whole appeal. This 1966 Morgan Plus 4 rides on a chassis with a wood-framed body, a construction method most manufacturers had abandoned decades earlier, wrapped around a four-cylinder engine borrowed entirely from another company’s sedan lineup. It looks like a muscle car ancestor from a parallel universe where displacement never became the point. So why did buyers keep choosing hand-built simplicity over Detroit’s arms race of cubic inches?

A Body Built the Old-Fashioned Way

Morgan’s Plus 4, produced from 1950 through 1969, kept a construction method the rest of the industry had largely moved past: a traditional ash wood frame supporting hand-formed aluminum body panels over a steel chassis. That approach made every Plus 4 essentially a coachbuilt car assembled in small batches, a sharp contrast to the stamped-steel unibody construction that American muscle car makers were racing to modernize during the same decade.

Borrowed Power, British Handling

Rather than developing its own engine, Morgan sourced the Plus 4’s four-cylinder powerplant directly from Triumph, moving from the 1,991cc TR3 unit to the larger 2,138cc TR4 engine starting in 1962, the same displacement fitted to this 1966 example. Twin SU carburetors and a genuinely light overall curb weight let the Triumph engine’s roughly 100-plus horsepower feel far quicker than the number alone suggests, since the Plus 4 carried a fraction of the mass of any contemporary American V8 muscle car.

A Rare Factory Performance Variant

1966 also happened to be the only year Morgan built a dedicated competition version of the Plus 4, a low-line “Competition” model fitted with a Derrington exhaust manifold, a Derrington steering wheel, 72-spoke wire wheels, and adjustable Armstrong rear shocks, though only 42 of those specific cars were ever built, out of roughly 279 total Plus 4s produced that year.

Why the Formula Eventually Ran Out

Production of the Plus 4 finally ended in 1969, not because demand disappeared, but because Morgan’s supply of Triumph engines dried up as Triumph shifted its own model lineup, leaving Morgan without the drivetrain that had defined the car for nearly two decades. That dependency on a single outside supplier is a large part of why surviving, well-documented Plus 4s like this one, complete with a period-correct interior and engine bay, are treated as a genuinely different species from anything Detroit was building in the same era.

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