The 1970s were a time of great change for Corvette. While a late production start for the 1970 model year prevented the first cars from rolling off the assembly line until January, sales rebounded in 1971 and continued to climb. But at the same time, outside forces, such as the oil embargo and increasing government regulations, were having an impact on Corvette performance.
The original high-performance LT1 engine, a 350-cu.-in. "Small Block," was introduced in 1970. It generated 370 horsepower. That year, the "Big Block" displacement was increased to 454 cu. in., and was rated at 390 horsepower in the LS5 version.
In 1971, a special-purpose "Big Block" V8 was available that produced 425 horsepower. But 1971 was the last year for "gross" horsepower ratings. The industry changed to a "net" rating system that accounted for the exhaust system, vehicle accessories and other components. It provided a truer measure of an engine's performance and is still used today.
This car was auctioned off by RM Auctions in June of 2010 at the Town and Country Resort & Convention Center, San Diego, California.
Source: Chevrolet press, RM Auctions
Photo Credit: Copyright Darin Schnabel