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ZZ 572 / 620 HP Base.<br>
Click to enlarge
CategoryEngines
Sub-CategoryG.M. Automotive Crate Engines
Part number12498792
DescriptionZZ 572 / 620 HP Base.
The new ZZ572/620 is built around an all-new Gen VI tall deck Bow Tie big block. This all new engine is filled with a forged 4340 steel crank with 4.375 inch stroke, shot peened, forged 4340 H-beam rods, and forged aluminum pistons with full floating wrist pins. Hard core race parts for hard core long term durability!

The redesigned rectangular port aluminum cylinder heads result in a pump gas friendly 9.6 to 1 compression ratio. A hydraulic roller cam with 0.632 inch lift actuates the stainless steel valves. And, of course, hardened chromemoly retainers, roller rocker arms, and dual valve springs are used to complete the valvetrain.

This engine makes 620 horsepower at 5500 RPM and 650 ft. lbs. of torque at 4500 RPM.

Pump gas friendly, massive torque and horsepower, all from GM, the ZZ572/620 is for those who consider excess to be barely enough.

GM Crate Engines are horsepower rated to SAE Standards.

ZZ 572/620 Technical Information
Horsepower 620 @ 5500 RPM
Torque 650 Ft. Lbs. @ 4500 RPM
Max. Recommended RPM 6000 RPM
Compression Ratio 9.6:1

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Copyright California Marine Sales Corporation, 1999-2014.
California Marine Sales Corporation, #150-6751 Graybar Road,
Richmond, B.C., Canada V6W 1H3
Phone (604) 278-1880, Fax (604) 278-6040
Email: sales@californiamarine.com