Chevrolet Performance ZZ572 C.I.D. 620 HP Deluxe Long Block Crate Engines

Chevrolet Performance's largest, most powerful street engine is here. The ZZ572 c.i.d. 620 hp deluxe long block crate engines are built around an all-new generation VI one-piece main seal tall deck—572 c.i.d. with approximately 9.6:1 compression, 620 hp at 5,500 rpm, and 650 lbs.-ft. of torque at 4,500 rpm, with a recommended max rpm of 6,000. These all-new race blocks have a 4.560 in. bore and are filled with forged 4340 steel cranks with 4.375 in. stroke, shot-peened forged 4340 H-beam rods, and forged aluminum pistons with full floating wrist pins. They include re-designed rectangular port aluminum cylinder heads with 118cc combustion chambers, and stainless steel valves at 2.25 in. intake side and 1.88 in. exhaust side. Experience massive torque and horsepower—from Chevrolet Performance! Additional engine specs: * Hydraulic roller camshafts * Valve lift: .632 in. intake and .632 in. exhaust side * Duration at .050 in. for intake is 254 degrees and 264 degrees exhaust side * Hardened chromoly retainers * Dual valve springs 1.50 in. coil diameter, 1.800 in. installed height with 197 lbs. seat pressure * Aluminum roller rockers with 1.7:1 ratios * High performance one-piece push rods * Tall deck single-plane intake manifold and 850 cfm carburetor * GM distributor handles ignition * Spark plugs and wire are included, along with screened and louvered windage trays * High-RPM torsional dampers * Pump gas friendly Show Less