The 632-cubic-inch ZZ632/1000 crate engine was designed for drag racing builds and not meant to be used on the street. The 10-liter mill is rated at 1004 hp and 876 lb-ft of torque on pump gas without the use of any supercharging.
Chevy’s current top offering is the ZZ572/740R Deluxe, which is rated at 727 hp and 680 lb-ft.
The iron-block ZZ632/1000 was designed with a redline of 7,000 rpm and features electronic port injection fed through symmetrical ports built into its CNC-machined aluminum head, forged aluminum pistons along with a forged steel crank and connecting rods. Chevrolet said a single engine was subjected to 200 simulated runs during development without issues.
Pricing for the ZZ632/1000 has not yet been announced, but it will make its public debut at the SEMA show in Las Vegas this November ahead of the start of deliveries in early 2022.
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