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The Right Way to Build a V8-Powered Porsche 911

Photo credit: Hagerty - YouTube
Photo credit: Hagerty - YouTube

From Road & Track

When Bob Radke got himself a 1975 Porsche 911 S without an engine, he didn't start looking for a nice 2.7-liter flat-six like most would. Instead, he turned to Las Vegas company Renegade Hybrids for a small-block conversion kit, and Westech Performance for a built Chevy V8 worthy of the Porsche's rear.

The engine has 383 cubic-inches of displacement, a single four-barrel intake manifold, reverse-flow cooling, a radiator at the front, big coils, big injectors, big fuel rails, and an LS3 exhaust manifold. It's hooked up to a Porsche 930 four-speed transaxle with heavy-duty axles, and also has VW Motorsport wheels wrapped in sticky Toyo tires.

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The result is 603 horsepower and 543 lb-ft of torque in a car weighing 2490 lbs, which is less than a stock '75 911 S.

Watch the video on YouTube here.

The most amazing thing is that the LS6 V8 fits right onto the stock mounting points, so there was no cutting involved. That means the option of swapping in a traditonal flat-six is always there, although, I'd be surprised if Mr. Radke got tired of having a Corvette-sounding monster that's lighter and faster than most other '75 911s.

Just listen to it...

Watch the video on YouTube here.

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