from and torque of in "Base" and "Deluxe" packages. The "Ram Jet 502", the / crate motor, was offered with fuel injection, and came as a turn key setup which included all the wiring and electronics needed to operate in any vehicle. It was also used in marine applications. ZZ572 General Motors began offering a newly developed in 1998 to the aftermarket via its GM Performance Parts division. This engine has a bore and a stroke of . This is a and version, designated ZZ572/620 Deluxe, capable of running on 92 octane pump gasoline for street applications. Another version of the same engine is available as a high compression variant, codenamed ZZ572/720R Deluxe, generating a minimum of on high-octane, i.e., race-gas. The 572 is officially offered by Chevrolet for the 2022 model year COPO Camaro. ZZ632 In 2021, Chevrolet Performance presented the largest and most powerful crate engine in the brand's history — the ZZ632/1000 crate engine. It's a naturally-aspirated, V-8; producing and of torque. The motor itself weighs . According to Russ O’Blenes, the GM director of the Performance and Racing Propulsion Team; “This is the biggest, baddest crate engine we’ve ever built. 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 through eight-port injectors, with the engine breathing through CNC-machined high-flow aluminum cylinder heads featuring symmetrical ports. While Big Blocks have usually been designed with variations in port shape from cylinder to cylinder, all eight intake ports of the ZZ632 have the same volume, length, and layout. Furthermore, all of the ZZ632's exhaust ports are identical. This arrangement guarantees all individual cylinders 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 huge 632 cubic-inch displacement. The bore grows by , compared to the