This engine program combined the classic architecture of the Ford Flathead V8 with the latest parts and technology the performance industry has to offer. Let’s check out the results. 

This unique project came about when Bonneville racer Ron Cooper commissioned top engine builder Keith Dorton of Automotive Specialists in Concord, North Carolina to produce a Ford Flathead V8 engine with a very special purpose. Namely, to fit the Southern California Timing Association’s strict rules for vintage flathead engines.

This engine would have to be based on a production block, be normally aspirated and limited to 325 cubic inches, and run on gasoline. But apart from those restrictions, the very latest parts, materials, and technology could be employed. The goal was 250 hp, which may not seem like much here in the 21st century, but it’s asking an awful lot of a Flathead V8, believe that.

Using Mahle overbore pistons and a custom billet crank, the displacement was enlarged from 239 to 313 cubic inches, while some NHRA Pro Stock tricks were used to modernize the L-head valvetrain hardware. On top, a pair of 750 cfm Holley carburetors are bolted to a gigantic intake plenum. At one point in the project the exhaust ports were rerouted through the top of the block (as shown above) in Cadillac V8 style, but this exotic flathead racing mod was eventually abandoned as time ran out.

But despite that setback, the project hit its target right on the bullseye: 249.4 horsepower at 5,300 rpm and 257 lb-ft of torque at 4,700 rpm. If you like, take a moment to skip forward to the 32-minute mark to hear the engine on the dyno—yep, it sounds as good as any Flathead V8 ever has. Video below.

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