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4 Liters Of Golden Chocolate Lusciousness

Singer’s latest contribution to the advancement of the human race is its first 4.0-liter flat-six, a 390 horsepower screamer based on the company’s thoroughly reworked 3.6. And it was the only thing that could pull me away from the F40 on the other side of the Quail lawn.

Singer keeps upping the ante in the world of air-cooled sixes. It started with the Porsche 964-based 3.6-liter, which eventually evolved into its Cosworth-developed 3.8. But for its latest build, Singer tapped Ed Pink Racing in North Hollywood to blow it out to an even 4 liters, with peak power delivered at 7,200 rpm and 315 lb-ft of twist at 6,000 revs. The pistons are custom Mahle bits, the crankshaft is from Pankl, with Carillo rods, reworked cylinder heads and a modified GT3 intake plenum by Jenvey.

View original article from Jalopnik.

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