Chevrolet ZZ632/1000 Wins New Product Award Performance-Street at SEMA 2021

All “car guys” eyes are on SEMA this week.  The Specialty Equipment Market Association (SEMA) announced its Best New Products Award winners Tuesday (November 2, 2021), in the Performance-Street Product category, the Winner was the ZZ632/1000 Crate Engine by General Motors.

Chevrolet ZZ632/1000 Wins New Product Award Performance-Street at SEMA 2021. Photo Credit Gary Rosier for Vette Vues Magazine
Chevrolet ZZ632/1000 Wins New Product Award Performance-Street at SEMA 2021. Photo Credit Gary Rosier for Vette Vues Magazine

The Specialty Equipment Market Association (SEMA) announced its Best New Products Award winners at the 2021 SEMA Show. These awards are given to the most innovative and cutting-edge automotive aftermarket products that will be available in 2022.

SEMA’s annual New Product Awards competition recognizes outstanding achievements in developing products being introduced to the automotive specialty-equipment market at the SEMA Show. Products are judged in 16 award categories, and each category has one winner and two runners-up.

More than 1,300 were entered into the 16 different Showcase categories to be considered for a SEMA New Product Awards this year. Winners were selected based on various factors that included superiority of innovation, technical achievement, quality and workmanship, consumer appeal and marketability, and more.

SEMA announced its Best New Products Award winners Tuesday (November 2, 2021), and in the Performance-Street Product category, the winner was the ZZ632/1000 Crate Engine by General Motors. Runner’s up was VENOM CP3 CONVERSION KIT RAM 6.7L PICKUP 2500/3500 2019-2020, BD Diesel and the Eluminator Mach E Motor, Ford Motor Company

In Vette Vues blog post today we will take a look at this new ZZ632/1000 monster engine.

The all-new ZZ632/1000 is the largest, most powerful Big-Block crate engine ever manufactured by Chevrolet Performance. This massive, naturally aspirated 632-cubic-inch V8 delivers 1,004 horsepower with 876 lb.-ft. of torque using 93-octane gas straight from the pump.

It’s been modernized with high-flow aluminum cylinder heads with symmetrical intake ports, ensuring all eight individual cylinders produce similar power. To meet the high-rpm demands of today’s performance enthusiast, this technologically advanced Big-Block engine features: 

  • 1,004 horsepower with 876 lb.-ft. of torque
  • All-new RS-X symmetrical port cylinder heads
  • Cast-iron Tall Deck 632 Bowtie Sportsman block
  • Hydraulic roller camshaft
  • 449cc intake runners
  • 7,000 rpm capability
  • Available performance components   

ZZ632/1000 DELUXE ENGINE TECH SPECS

  • Part Number: 19432060
  • Engine Type: Chevy Tall-Deck Big-Block V-8
  • Displacement (cu. in.): 632 cu. in.
  • Bore x Stroke (in.): 4.600 x 4.750 in.
  • Block: Cast Iron Bowtie with 4-bolt main caps-tall deck
  • Crankshaft: Forged 4340 steel
  • Connecting Rods: Forged steel H-beam
  • Pistons: Forged aluminum 2618 alloy
  • Intake Manifold: Aluminum high-rise single plane
  • Throttle Body: 4500-style
  • Fuel Injectors: 86-lb/hr.
  • Camshaft Type: Billet Steel Hydraulic Roller
  • Valve Lift (in.): 0.780 intake/0.782 exhaust
  • Camshaft Duration (@0.050 in.): 270º intake/287º exhaust
  • Cylinder Heads: Aluminum spread-port; 70cc chambers -RS-X design
  • Valve Size (in.): 2.450 intake/1.800 exhaust, Titanium (5/16-in stem O.D.)
  • Ignition Type: 58X crank-triggered, coil-near-plug
  • Compression Ratio: 12.0:1 (nominal)
  • Rocker Arms: Forged aluminum; roller-style
  • Rocker Arm Ratio: 1.8:1 (shaft-mount)
  • Water Pump: Aluminum
  • Oil Pan: Steel 8-quart
  • Recommended Fuel: Premium pump (93 octane or higher)
  • Maximum Recommended RPM: 7,000
  • Balanced: Internal
ZZ632/1000 Crate Engine by Chevrolet
ZZ632/1000 Crate Engine by Chevrolet

Below is a press release date 2021-10-20

CHEVROLET PERFORMANCE UNVEILS ITS LARGEST, MOST POWERFUL CRATE ENGINE EVER

The ZZ632/1000 is a 632-cubic-inch V-8 delivering 1,004 horsepower

DETROIT – Chevrolet Performance today introduced the ZZ632/1000* crate engine — the largest and most powerful crate engine in the brand’s history. The naturally aspirated 632-cubic-inch V-8 produces 1,004 horsepower and 876 lb-ft of torque.

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

The Big Block V-8 reaches peak power at 6,600 rpm and revs to a recommended maximum of 7,000 rpm. Fuel is delivered by eight port injectors with the engine breathing through CNC-machined high-flow aluminum cylinder heads featuring symmetrical ports. While Big Blocks have traditionally been designed with variations in port shape from cylinder to cylinder, all eight intake ports of the ZZ632 have the same length, volume and layout. Similarly, all of the ZZ632’s exhaust ports are identical. This symmetry ensures individual cylinders all produce similar power.

These RS-X Symmetrical Port cylinder heads are named for powertrain engineer Ron Sperry, who designed them as one of his final accomplishments in more than 50 years working on General Motors performance and racing engines. Sperry also introduced symmetrical ports to Chevy’s iconic Small Block V-8 with the Gen III LS1 engine that debuted in the 1997 Chevrolet Corvette.

The ZZ632’s iron block shares a mold with Chevrolet Performance’s ZZ572 crate engines, but the castings are machined to accommodate the massive 632-cubic-inch displacement. The bore grows by 0.040 inch compared to the 572-cubic-inch V-8s, with most of the displacement gain coming from a stroke that’s 0.375 inch longer. To provide clearance for that long stroke, engineers modified both the block and the connecting rods. Four-bolt main caps and a forged rotating assembly ensure strength and durability. During development, a single engine endured more than 200 simulated drag strip passes on a dynamometer.

The ZZ632/1000 crate engine will be on display at the 2021 SEMA Show in Las Vegas, Nov. 2–5. Chevrolet Performance dealers will begin deliveries in early 2022.

Chevrolet Performance ZZ632/1000 
Displacement632 cu in (10,348 cc)
Bore x Stroke4.60 x 4.75 in
Compression Ratio12.0:1
Power1,004 hp @ 6600 rpm
Torque876 lb-ft @ 5600 rpm
Maximum Recommended Engine Speed7,000 rpm
BlockTall Deck 632 Bowtie Sportsman, cast iron, four-bolt main caps
Cylinder HeadsRS-X Symmetrical Port, CNC-machined aluminum
CrankshaftForged steel
Connecting RodsForged steel
PistonsForged aluminum
FuelElectronic port injection

*This engine is designed and intended for use in vehicles operated exclusively for racing competition or organized competition on courses separate from public streets or highways. Installation or use of this engine on a vehicle operated on public streets or highways is likely to violate U.S., Canadian, and state and provincial laws and regulations related to motor vehicle emissions.

Chevrolet Performance ZZ632 crate engine
Chevrolet Performance ZZ632 crate engine
Chevrolet Performance ZZ632 crate engine graph
Chevrolet Performance ZZ632 crate engine graph

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