THE MOST POWERFUL BIG-BLOCK STREET ENGINE FROM CHEVROLET PERFORMANCE

The ZZ572/620 is the ultimate expression of Chevrolet Performance’s engineering capability.

We build the ZZ572 with huge 4.560-inch bores and add a forged 4.375-inch-stroke crankshaft. To make sure those cylinders are packed with every cubic centimeter’s worth of atmosphere, we use a camshaft with incredible 0.632/0.632-inch lift and 254°/264° duration specifications.

Aluminum rectangular-port heads with 310-cc intake passages complement the airflow capability offered by the big-bore bottom end. They also feature 118-cc raised exhaust ports and 118-cc combustion chambers. The valves are big, too — measuring 2.250 inches on the intake side and 1.880 inches on the exhausts.

Chevrolet Performance delivers the ZZ572/620 Deluxe with an 850-cfm carburetor, HEI distributor, aluminum water pump, and distinctive orange powder-coated valve covers that proudly proclaim the 572 legend.

For the builder who wants the foundation of this Big-Block powerhouse, but wants to finish it with the induction system of his choice, we offer the ZZ572/620 Base engine P/N 12498792. It comes with the bottom end fully assembled — including the forged crankshaft, rods, and pistons — along with the unique 0.632-inch-lift roller camshaft.

ZZ572/620 DELUXE 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 four-bolt main caps
• Crankshaft (P/N 88961554): Forged steel
• Connecting Rods (P/N 88962926): Forged steel, shot peened
• Pistons (P/N 88962925): Forged aluminum
• Camshaft Type (P/N 19210721): Hydraulic roller
• Camshaft Lift (in.): .632 intake / .632 exhaust
• Camshaft Duration (@.050 in.): 254° intake / 264° exhaust
• Cylinder Heads (P/N 12499255): Aluminum rectangular port, 118-cc chambers
• Balanced: Internal
• Valve Size (in.): 2.250 intake / 1.880 exhaust; stainless steel
• Compression Ratio: 9.6:1
• Rocker Arms (P/N 12361323): Aluminum roller style
• Rocker Arm Ratio: 1.7:1
• Distributor (P/N 88961867): HEI
• Carburetor (P/N 19170095): 850-cfm
• Water Pump (P/N 19168602): Aluminum, short-style
• Spark Plugs and Wires: Included
• Flexplate (P/N 12561217): 14"
• Recommended Fuel: Premium
• Ignition Timing: 36° @4,000 rpm
• Maximum Recommended rpm: 6000