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Chevrolet Performance 12498792

ZZ572/620 Base Engine 621 HP @ 5400 RPM

Chevrolet Performance 12498792

809-12498792

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Ships 12/16/16 if Ordered Today
Chevrolet Performance 12498792 ZZ572/620 Base Engine 621 HP @ 5400 RPM $12,559.00
ZZ572/620 Base Engine
  • 621 HP @ 5400 RPM
  • 645 ft/lbs TQ @ 4200 RPM

  • Chevrolet Performance 12498792 Details

    INSTALLATION NOTES:
  • 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
  • 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
  • Designed for pre-1976 street vehicles or any off-road vehicle
  • Not intended for marine applications

  • Specifications:

    Flywheel Included
    No
    Engine Balance
    Internal
    Wiring Harness Included
    No
    Air Cleaner Included
    No
    Assembled
    Yes
    Carburetor Included
    No
    Computer Included
    No
    Crate Engine Cylinder Head Material
    Aluminum
    Cylinder Heads Included
    Yes
    Distributor Included
    No
    Engine Assembly Style
    Long block
    Flexplate Included
    Yes
    Harmonic Balancer Included
    Yes
    Intake Manifold Included
    No
    Oil Pan Included
    Yes
    Quantity
    Sold individually
    Spark Plug Wires Included
    No
    Spark Plugs Included
    No
    Throttle Body Included
    No
    Timing Cover Included
    Yes
    Valve Covers Included
    Yes
    Water Pump Included
    No
    Rear Main Seal Style
    1-piece
    Manufacturer's Part Number:
    12498792

    Perfect Foundation For A Pump-Gas Boulevard Shaker!

    Free Shipping!

    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. They build the ZZ572/620 with huge 4.560-inch bores and a 4.375-inch stroke to help it deliver 621-horsepower and a stunning 645 lb.-ft. of grunt! Strength comes from a latest-generation tall-deck block casting with four-bolt main caps, forged steel crankshaft, forged steel H-beam connecting rods, forged aluminum pistons, 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.

    Horsepower ratings were achieved using a single plane intake manifold, 850cfm 4150-style carburetor and HEI distributor.

    ZZ572/620 BASE TECH SPECS:
  • Engine Type: Chevy Tall Deck Big-Block V-8
  • Displacement: 572ci
  • Bore x Stroke: 4.560'' x 4.375''
  • Block: Cast-iron with four-bolt main caps
  • Crankshaft: Forged steel
  • Connecting Rods: Forged steel, shot peened
  • Pistons: Forged aluminum
  • Camshaft Type: Hydraulic roller
  • Camshaft Lift: .632'' intake / .632'' exhaust
  • Camshaft Duration (@.050 in.): 254° intake / 264° exhaust
  • Cylinder Heads: Aluminum rectangular port, 118cc combustion chambers
  • Valve Size: 2.250'' intake / 1.880'' exhaust
  • Compression Ratio: 9.6:1
  • Rocker Arms: Aluminum roller rockers
  • Rocker Arm Ratio: 1.7:1
  • Flexplate: 14'' diameter
  • Recommended Fuel: Premium pump (92 octane)
  • Ignition Timing: 36° Total @ 4000 rpm
  • Maximum Recommended RPM: 6000
  • Balanced: Internal
  • GM Warranty

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