Most of GM’s crate engines are made in Mexico. The 6.2-liter LT5 banger is undoubtedly one of the most impressive GM crate engines money can buy. It cranks out 640 horsepower at 6,400 rpm and 630 pound-feet of twist at 3,600 rpm. However, Chevy did spec 1970-era Z28/LT1 forged "pink" connecting rods that were said to have better bolts and more "prequalification" (including magnetic particle-inspection and shot-peening) than the current (albeit visually similar) OE assembly-line rods. 350," and the engine code stamped at the engine plant on the block-pad located in front of the passenger-side cylinder head was assigned engine code "ZZZ.". This is the crate engine with the Frankenstein parts: a solid roller cam with 0.714/0.714 lift and 266/274 duration; a 12:1 compression ratio; a raised-deck iron block; and the key feature, 572 ci. Supporting the massive flow of air is an aggressive hydraulic roller camshaft and a forged steel crankshaft. GM's ZZ 350 small-block family started and won the crate engine wars between Chevy, Ford, and Chrysler. But by the mid-1980s, the small-block had evolved from its original configuration. Appearing in mid-1996, the ZZ4 would become the longest-lived ZZ engine, remaining in production through 2014. It’s one of Chevy’s most versatile crate engines created by GM, capable of delivering 430 horsepower at 5,900 rpm and 425 pound-feet of torque at 4,600 rpm in standard flavour. The unit is based on the 350 HO crate engine and its dual-plane intake manifold allows for a better power distribution across the rpm band. Meet the newest member of the iconic 350-based ZZ engine family—ZZ6! ZZ4 The pistons were upgraded to the lightweight flat-top Mahle design with metric rings used on OE LT4 engines, boosting compression to 10:1. The ZZ6 also uses an aggressive hydraulic roller camshaft that supports the engine's high-rpm airflow capability while maintaining excellent low-speed drivability. Dubbed as the new Chevy 350, the LS3 is what motivates the standard fifth-generation Camaro SS and the C6 Corvette. Requires AWD and 3.6L engine. Used in the Chevy Corvette C7 Stingray, this 11.5:1-compression small block produces 460 horsepower at 6,000 rpm and 465 pound-feet of torque at 4,600 rpm. Best thing about it, though: you can pound it with as many aftermarket bits and bobs as you like and take it to outputs north of 1,000 horsepower easily. Through 2004 ZZ engines had always been sold as long-block assemblies, leaving it to the consumer to fully dress the motor. We couldn’t leave the LSA crate engine aside, right? Cranking out 580 horsepower and redlining at 8,000 rpm, the engine is slapped with a 2.9-liter twin-screw Whipple supercharger and mates to a TH400 three-speed automatic gearbox. The first really significant changes occurred with the late-1992 introduction of the ZZ3. GM's ZZ 350 small-block family started and won the crate engine wars between Chevy, Ford, and … Rated at 355 horsepower, the ZZ4 still used the old L98 cylinder heads. Base Crate Engines and get Free Shipping on Orders Over $99 at Summit Racing! There were even limited new runs of long- and short-block, classic-era Chevrolet small- and big-block engines from time to time—as long as the original castings and tooling were still available at the engine assembly plant so they could be run down the same production line as current model-year motors with only minimal disruption. This V-8 Chevy crate engine packs 455 horsepower at 6,000 rpm, five horsepower less than the regular LT1, but the same amount of torque, namely 465 pound-feet at 4,600 rpm. Other enhancements included an 8-inch torsional damper in place of the previous 6.75-inch-od unit, an oil-pan windage tray, and (starting in 1995) new powdered-metal connecting rods. The ZZ6 crate engine from Chevrolet Performance combines the modern conveniences of electronically-controlled fuel injection with the versatility and classic styling of the proven 350 small block Chevy.