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ZZ 572 / 720 HP Base.<br>
Click to enlarge
CategoryEngines
Sub-Category
Part number12498826
DescriptionZZ 572 / 720 HP Base.
Engineered by GM Performance Parts and GM Racing exclusively for sportsman racers, the new ZZ572/720R is built around an all-new Gen VI tall deck Bow Tie big block. This all new race block 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. Plasma moly piston rings are standard as is the screened and louvered windage tray. GM's first purpose-built drag race engine is filled with hard core race parts for hard core performance and long term durability.

The redesigned rectangular port aluminum cylinder heads result in a race gas only 12 to 1 compression ratio. A solid roller cam with 0.714 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 valve train.

This engine makes the 720 horsepower at 6250 RPM and 685 ft. lbs. of torque at 4500 RPM. Out of the crate and into your race car - it's just that simple.

Race gas fueled, high revving horsepower, all from GM, the ZZ572/720R is the engine that will get you down the track consistently, pass after pass, season after season.

GM Crate Engines are horsepower rated to SAE Standards.

Technical Notes: ZZ 572/720R Technical Information
Horsepower 720 @ 6250 RPM
Torque 685 Ft. Lbs. @ 4500 RPM
Max. Recommended RPM 6750 RPM
Compression Ratio 12:1

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