Horsepower: 621 HP

Torque: 645 LB-FT

Go Big or Go Home

Proving the adage that there’s no replacement for displacement, the ZZ572/620Deluxe is the ultimate expression of Chevrolet Performance’s engineeringcapability, wrapped up in a soul-stirring combination of performance andattitude. We build the ZZ572 with huge 4.560-inch bores and a 4.375-inchstroke to help it deliver 621 horsepower and a stunning 645 lb.-ft. of torque.

Strength comes from a brand-new, latest-generation block casting withfour-bolt main caps and an all-forged rotating assembly. High-flow aluminumrectangular-port cylinder heads and a hydraulic roller camshaft—with incredible0.632/0.632-inch lift and 254/264-degree duration specifications—worktogether to optimize airflow across the rpm band. We deliver the ZZ572/620Deluxe with an 850-cfm carburetor, HEI distributor, aluminum water pump anddistinctive orange powder-coated valve covers. If your project vehicle can handlethe torque, the ZZ572/620 has all the power you need!

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

TECH SPECS

• Part Number: 19331583
• Engine Type: Chevy Tall-Deck Big-Block V-8
• Displacement (cu in): 572
• Bore x Stroke (in): 4.560 x 4.375
• Block (P/N 19212195): Cast iron with 4-bolt main caps
• Crankshaft (P/N 88961554): Forged steel
• Connecting Rods (P/N 88962926): Forged steel, shot peened
• Pistons (P/N 88962925): Forged aluminum
• Intake Manifold (P/N 88961161): Single plane
• Carburetor (P/N 19420446): 850-cfm
• Camshaft Type (P/N 19210721): Hydraulic roller
• Valve Lift (in): .632 intake / .632 exhaust
• Camshaft Duration (@.050 in): 254° intake / 262° exhaust
• Cylinder Heads (P/N 19331429): Aluminum rectangular port, 118cc chambers
• Valve Size (in): 2.250 intake / 1.88 exhaust; stainless steel
• Compression Ratio: 9.6:1
• Rocker Arms (P/N 19210726): Aluminum roller style
• Rocker Arm Ratio: 1.7:1
• Water Pump (P/N 19168602): Aluminum, short-style
• Recommended Fuel: Premium pump
• Distributor: HEI
• Spark Plugs and Wires: Included
• Ignition Timing: 36° Total @ 4,000 rpm
• Maximum Recommended rpm: 6,000
• Balanced: Internal
• Flexplate (P/N 12561217): 14"

NOTE: Distributor with melonized steel gear MUST be used with long-blocks and partial engines with steel camshafts, or engine damage will occur.