New V8 motor Chevrolet Performance ZZ632/1000

Chevrolet Performance Unveils 1,004-Horsepower ZZ632 Crate Engine

Earlier this week, Chevrolet Performance teased us with a brief video overlaid with the sound of some impressive internal combustion noise. Now, the go-fast brand has pulled the sheets on the source of that soundtrack, namely the new Chevrolet Performance ZZ632 crate engine.

Framed at the largest and most powerful engine Chevrolet Performance has ever made, the ZZ632 create engine produces a head-spinning 1,004 horsepower and 876 pound-feet of torque when fed 93-octane gasoline. Peak power arrives at 6,600 rpm, while peak torque arrives 5,600 rpm. Redline is recommended at 7,000 rpm.

“The ZZ632 sits at the top of our unparalleled crate engine lineup as the king of performance,” said director of the Performance and Racing Propulsion Team, Russ O’Blenes. “It delivers incredible power, and it does it on pump gas.”

Highlights include eight port injectors and CNC-machined high-flow aluminum heads. The heads are equipped with symmetrical intake and exhaust ports, thus ensuring all cylinders produce the similar power output. The technology is dubbed RS-X Symmetrical Port cylinder heads as a nod to Ron Sperry, who also designed the symmetrical ports on the Chevy Small Block Gen III LS1 V8 cradled by the 1997 Chevy Corvette.

The ZZ632 includes a cast iron block, four-bolt main caps, a forged steel crankshaft and connecting rods, and forged aluminum pistons. The compression ratio is 12.0:1. Notably, the iron block shares a mold with the Chevrolet Performance ZZ572 crate engine, with the castings machined out to the impressive 632-cubic-inch (or 10.3-liter) displacement. Bore is up 0.040 inch, while stroke was increased 0.375 inch. Both the block and connecting rods were modified to accommodate the extra-long stroke.

According to Chevrolet Performance, a single example of the ZZ632 endured over 200 simulated drag-racing passes on a dynamometer during development.

As expected, the Chevrolet Performance ZZ632 crate engine will make an appearance at the 2021 SEMA Show next month. Deliveries are expected to ramp up early next year.

Subscribe to GM Authority for more Chevrolet Performance news, Chevrolet news, and around-the-clock GM news coverage.

Source: loaded 26.10.2021

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