There are few engines that conjure up images of greatness like the 427 Chevy big-block. New to the GM Performance Parts lineup, the ZZ427 big-block crate engine brings back all of the good things that you remember about the 427 with a few modern new upgrades. With an updated cast iron block, a 10.1:1 final compression ratio, and an aggressive hydraulic roller camshaft, the ZZ427 offers you outstanding performance while still living on low octane fuel.
The legendary 427" big-block Chevy powered some of the most storied cars in the history of the high performance automobile. This latest version holds true to that tradition, offering you a tough, 4-bolt main cast iron block with all a forged internal rotating assembly. The top half of the engine is the same as the limited edition Anniversary 427 crate engine: oval-port heads that use 2.19" intake and 1.88" exhaust valves work with 1.7:1 aluminum roller rockers and a .510" intake/.540" exhaust camshaft. The intake is a matching, high-flow oval-port aluminum piece that gets fed the air/fuel mix from a 870-cfm carburetor. An HEI distributor, aluminum water pump, spark plug wires, and a 14" flexplate round out the package. Internally balanced, the ZZ427 will spin to 6000 rpm before its time for you to shift.
The ZZ427 is an exciting trip back to one of the high points in the history of the Chevrolet big-block. With a conservative rating of 430 horsepower and loads of torque, its still one of the best crate engines for just about any big-block application.
**This part is shipped via truck freight, additional shipping charges will apply. Multiple truck freight parts on an order may increase the shipping amount.
Note: Crate engine shipping charges have two components; Commercial Delivery (Free) & Residential Charge.
The commercial shipping delivery to a freight terminal or commercial address ((provided the commercial address has a forklift to unload the product). If the product is shipped to a residential address there is an additional cost of $300 for the use of a lift-gate vehicle. Please call USM (888-876-7223) for any questions.
Truck Freight: Most Truck Freight items have two standardized shipping rates, one rate to the terminal, another to your door. Additional fees apply for lift gate service; to avoid this you can choose terminal pickup.
