GM Performance Parts Largest Displacement, Most Powerful Full Race Crate Engine Ever!
572/720 Race Version
685 Ft. Lbs Torque
Fuel- 110-112 Octane -(CamII, Turbo Blue etc)
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.
This engine has a Mechanical Fuel Pump Provision.
This engine is internally balanced.
This engine-(Deluxe version) Includes a water pump, carburetor, distributor, intake manifold, intake manifold gaskets, and spark plug wires.
This engine block has provisions for mechanical clutch linkage "Z bar" ball stud in both locations including the 1963-1982 Corvette location.
For manual transmission Applications, order 12555135 Flywheel and 6- 839756 Flywheel bolts
ZZ 572/720R Technical Information:
GM Performance Full Race Engines are Excluded from Limited Warranty Coverage
Horsepower 720 @ 6250 RPM
Torque 685 Ft. Lbs. @ 4500 RPM