Chevrolet Performance Anniversary Edition 427 All-Aluminum 427ci/430HP Engine
A Limited-Edition Crate Engine
That Honors the Legendary ZL1
The year was 1969, and the muscle car wars were in full swing. Each one of the big three had developed their own version of the ultimate high-performance big block engine. Then, GM unleashed the ZL1, the most powerful engine ever released by General Motors.
At the height of these muscle car wars, a few enterprising, dealer-backed racers worked the loopholes of Chevrolet's COPO ordering system to create a handful of factory-built supercars that weren't found in any brochure or order guide. They were equipped with an all-aluminum 427 engine dubbed the ZL1. It was similar in specification to the legendary L88 427, but with an aluminum block that saved about 100 pounds.
Chevrolet Performance commemorates the ZL1 with the Anniversary Edition 427 - an aluminum-block crate engine that mimics the original in spirit, but with design upgrades that make it a street-friendly option for resto-mod and tribute projects. Our modern aluminum cylinder block features strength-enhancing design tweaks, screw-in galley plugs, and more. We also use a hydraulic roller camshaft in place of the ZL1's original-type flat-tappet cam, making for smoother street operation and greatly reduced maintenance.
Only 427 examples of this unique engine were built, with each numbered crate engine including a special owner's kit with an authenticity certificate, special 427 emblems, and more.ANNIVERSARY EDITION 427 ALL-ALUMINUM 427ci TECH SPECS: