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In 1969, Chevrolet changed the perception of Corvette forever by introducing the ultra-powerful ZL-1 Corvette with a 427 CI engine producing 585 horsepower! The 1969 ZL-1 Corvette came equipped with an entirely new big-block engine option that produced more horsepower than any Corvette that had come before it. Any Corvette, when ordered with RPO ZL1, came fitted with an all-aluminum 427 C.I. engine that featured a dry-sump oil system and which weight approximately 100 pounds less.
1969 Corvette Sales Brochures
Download this 1969 Corvette Dealers Sales Brochure for a quick look at the features of the car. No need to be aware of any substitutes. There aren't any. There is no mistaking a Corvette for anything but a Corvette. The aerodynamic links of America's original sports car...
Power and blinding acceleration were the driving forces behind the development of the 1968-1969 Chevrolet Corvette 427. Only 390 1969 Corvettes were built with the famous L89 427 and while the L89 option was chosen 624 times in 1968, it is still a rare beast relative to total production. The 427 CI engine was good for 435 HP and a strong 460 lb-ft of torque making it one of the best-accelerating cars of its time. 
1966 7.0L V8 Engine
Upon its 1953 release, America’s sports car mustered only 150 HP, yet in 1966, the newly evolved Corvette nearly tripled this level of output. It was in 1966 that the Corvette was offered with not one, but two different variants of the robust 427 cubic-inch (7.0L) V8. In its most potent form (L72), the 427 officially produced 425 HP. However, most believe this value to be grossly understated.