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Chevrolet Performance ZZ572/620 Base Crate Engine

Brand: Chevrolet Performance

Part Number: 19331581

UPC:


$13,319.39

 

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  • 621 hp @ 5,400 rpm/645 il.-ft. @ 4,200 rpm
  • Cast-iron block with 4-bolt main caps
  • Aluminum oval port heads with 110cc chambers
  • The ultimate expression of Chevy Performance’s engineering capability

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ZZ572/620 Base Crate Engine

19331581 Chevrolet Engine

 621 hp @ 5,400 rpm / 645 il.-ft. @ 4,200 rpm

 

Our Baddest Big-Block Street Engine

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. We build 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, 118cc raised exhaust ports and 118cc combustion chambers process tremendous airflow. A hydraulic roller camshaft with incredible 0.632/0.632-inch lift and 254/264-degree duration specifications optimizes the airflow volume enabled by the large-port heads.

ZZ752/620 Base Crate Engine

P/N 19331581

ZZ752/620 Base Technical Specs:

Part Number: 19331581
Engine Type: Chevy Big-Block V-8
Displacement (cu in): 502
Bore x Stroke (in): 4.470 x 4.000
Block (P/N 19170540): Cast-iron with 4-bolt main caps
Crankshaft (P/N 10183723): Forged steel
Connecting Rods (P/N 19170198): Forged steel, shot peened
Pistons (P/N 12533507): Forged aluminum
Camshaft Type (P/N 12366543): Hydraulic roller
Camshaft Lift (in): .527 intake / .544 exhaust
Camshaft Duration (@.050 in): 224° intake / 234° exhaust
Cylinder Heads (P/N 12363390): Aluminum oval port; 110cc chambers
Valve Size (in): 2.250 intake / 1.880 exhaust; stainless steel
Compression Ratio: 9.6:1
Rocker Arms (P/N 12675724): Stamped steel
Rocker Arm Ratio: 1.7:1
Distributor (P/N 1104060): HEI type
Throttle Body (P/N 17113524): Included
Water Pump (P/N 19168602): Aluminum, short-style
Flexplate (P/N 10185034): 14"
Recommended Fuel: Premium pump
Ignition Timing: 35° Total at 4,000 rpm
Maximum Recommended rpm: 5,800
Balanced: External

 

Installation Notes:

• Requires a 12-volt power source (and ground), coolant, exhaust system, fuel feed and fuel return line (to the fuel tank). An in-tank fuel pump is recommended
• Clutch linkage bosses are 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
• Designed for pre-1976 street vehicles or any off-road vehicle
• Not intended for marine applications


IMPORTANT! For a safe, proper and trouble-free engine break-in, the MEFI 4 computer has a “green” mode that controls rpm during the break-in period. During this period, engine speed is limited to 4,000 rpm in the first hour, 4,500 rpm in the second hour and 5,500 rpm in the third hour

 

 

Supersedes old GM P/N 12498792



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