Chevrolet Corvette 427/425 Coupe

Chevrolet’s L72 427 V8 was a tour de force in every respect. Although it was officially rated at 425 hp, the L72’s 11.0:1 compression, solid-lifter cam, forged crank, free-flowing rectangular-port cylinder heads and bulletproof block actually allowed for closer to 450 hp. This was a potent motor, to be sure!

The L72 427/425 was developed from a series of spezcial Mark IV engines that were field-tested by Zora Arkus-Duntov and his team. Don Yenko used it for a limited number of Camaro and Chevelle conversions in 1967 and 1968, and it formed the basis of the COPO Camaro of 1969. In addition, the L72 was especially potent in the relatively lightweight Corvette.

This car was part of the RM Auctions in June of 2010 at the Town and Country Resort & Convention Center, San Diego, California. Part of the Mecum Auctions event in Kissimmee in January, 2013.

425 bhp, RPO L72 427 cu. in. V8 engine, Holley four-barrel carburetor, close-ratio Muncie four-speed manual transmission, independent front suspension with upper and lower A-arms and coil springs, independent rear suspension with half-shafts, lateral struts, radius rods and a single transverse leaf spring, four-wheel hydraulic disc brakes. Wheelbase: 98".

Source: RM Auctions
Photo Credit: Copyright Darin Schnabel

Be part of something big