Chevrolet Performance 19331583 - ZZ572/620 Deluxe Crate Engine

There’s no replacement for displacement with Chevrolet Performance’s uncompromising ZZ572/620. It’s their most powerful street/strip Big-Block and it's all-forged rotating assembly helps ensure that every one of its 620 horsepower and 650lb.-ft. are delivered with count-on-it durability. The engine also features high-flow, aluminum rectangular-port heads and a smooth hydraulic roller camshaft. This Deluxe crate engine package includes an HEI distributor, aluminum intake, Holley 850-cfm carburetor, cast aluminum valve covers and more. The ZZ572/620 is the ultimate street/strip Big-Block. Just make sure your project vehicle can handle all the power! Engine ZZ572/620 Deluxe Horsepower 621HP @ 5400RPM Torque 645FT/LBS @ 4200RPM Compression Ratio 9.6:1 Block Cast Iron with 4-Bolt, 4.560" Bore Crankshaft Forged Steel Heads Aluminum rectangular port, 118cc Chambers Valves 2.250"/1.880" Camshaft Lift 0.632"/0.632" Hydraulic Roller Dur. @ 0.050" 254°/264° Proving the adage there’s no replacement for displacement, the ZZ572/620 is the ultimate expression of Chevrolet Performance’s engineering capability, wrapped up in a soul-stirring combination of performance and attitude. Chevrolet Performance builds the ZZ572/620 with huge 4.560-inch bores and a 4.375-inch stroke to help it deliver 621 hp and a stunning 645 lb.-ft. of grunt! Strength comes from a latest-generation tall-deck block casting with four-bolt main caps and an all-forged rotating assembly, while high-flow aluminum rectangular-port cylinder heads with massive 310cc intake passages, 1.88 inch raised exhaust ports and 118cc combustion chambers process tremendous airflow. A hydraulic roller camshaft with an impressive 0.632/0.632-inch lift and 254/264-degree duration specifications optimizes the airflow volume enabled by the large-port heads. Chevrolet Performance delivers this Big-Block with an 850-cfm carburetor, HEI distributor, aluminum water pump and distinctive orange powder-coated valve covers that proudly proclaim the 572 legend. INSTALLATION NOTES • Due to crate fitment, the carburetor is shipped uninstalled and needs to be installed by an engine installer • Clutch linkage boss is now drilled and tapped. When using cast-iron exhaust manifolds, lower head bolts may need to be replaced with bolts with shorter heads, for clearance • Requires addition of starter and fuel pump (not included) • Gen VI tall-deck block has machined mechanical fuel pump boss • Comes with a 14" automatic transmission flexplate. Requires internally balanced flywheel for manual transmission applications • Not intended for marine applications