Chevrolet is releasing its biggest and most powerful engine yet.

Posted on October 20, 2021
Modified
Chevrolet is releasing its biggest and most powerful engine yet.

While most automakers rely on forced induction or electrification to generate more than 1,000 horsepower, Chevrolet has developed a V-8 crate engine that relies on good old-fashioned displacement to achieve four-digit horsepower.

Behold the new Chevrolet Performance ZZ632/1000, Chevrolet's largest and most powerful crate engine to date. It will debut at the SEMA Show in Las Vegas, with deliveries beginning in early 2022.

The big-block V-8 engine has a displacement of 10.35 liters, or a massive 632 cubic inches, and is designed to run on regular pump gas. Peak output is an impressive 1,004 hp and maximum torque is 876 lb-ft.

As the dyno chart shows, at only 3,000 rpm, torque already exceeds 600 lb-ft and does not drop below this level until the engine's recommended rev limit of 7,000 rpm is exceeded. The result is a smooth, linear power delivery all the way to a peak of 1,004 hp at 6,600 rpm.

The engine's steel block is shared with Chevrolet's ZZ572 line of small crate engines, with a slightly wider bore and longer stroke for greater displacement. Forged steel is used for the crankshaft and connecting rods, and forged aluminum for the pistons. Fuel is supplied by port injectors, one for each cylinder. Rather than vary the dimensions of the ports as in many big-block V-8s, Chevrolet kept the dimensions of each port the same so that each cylinder produces a similar output.

Before you start imagining an engine swap for your daily, Chevrolet warns that the engine is designed for competition and will likely violate emission regulations in most states.

Pricing has not yet been announced.

The 2021 SEMA Show will take place November 2-5. For more information, see the dedicated hub.

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