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Chevrolet Performance ZZ572ci/620HP Base Engine


Chevrolet Performance
Chevrolet Performance ZZ572ci/620HP Base Engine

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Capable of 620 horsepower at 5500 RPM and 650 ft/lbs of torque at 4500 RPM, Chevrolet Performance's ZZ572/620 is a long block engine assembly built around a tall deck, Gen VI, Bow Tie big block. It features a forged steel crankshaft, forged steel H-beam connecting rods, forged aluminum pistons, and much more! Cylinder heads have rectangular ports designed to produce a street-gas-friendly 9.6:1 compression ratio.

Specifications
  • Tall Deck, Gen VI, Bow Tie Block
  • 4.560" Bore x 4.375" Stroke
  • 4340 Forged Steel Crankshaft
  • 4340 Forged Steel H-Beam Connecting Rods
  • Forged Aluminum Pistons
  • Full-Floating Wrist Pins
  • Plasma-Moly Piston Rings
  • Compression Ratio: 9.6 to 1
  • Hydraulic Roller Camshaft (Lift: .632" Intake/Exhaust, Duration at .050": 254° Intake, 264° Exhaust)
  • Aluminum Cylinder Heads (Rectangular Port, 118cc Chambers)
  • Valve Size: 2.25" Intake, 1.88" Exhaust
  • Aluminum Rocker Arms (1.7 to 1 Ratio)
  • Chrome Moly Steel Spring Retainers
  • 1.540" Dual Springs

    Technical Notes
  • Designed for pre-1979 street vehicles and all off-road vehicles
  • Not intended for marine applications
  • Must use melonized distributor gear

    GM Warranty



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