Product Details
Chevrolet Performance's largest, most powerful engine is here. The ZZ572/720R Deluxe long block crate engines are built around an all-new generation VI one-piece main seal tall deck 572 c.i.d.--with approximately 12.0:1 compression, 720 hp at 6,250 rpm, and 685 lbs.-ft. of torque at 4,500 rpm, with a recommended max rpm of 6,750. These all-new race blocks have a forged 4340 steel crank, shot-peened forged 4340 H-beam rods, and forged aluminum pistons with full floating wrist pins.
Other features include: redesigned rectangular port aluminum cylinder heads with 118cc combustion chambers; and stainless steel valves at 2.25 in. intake side and 1.88 in. exhaust side. Mechanical roller camshafts are used, with valve lift being .714 in. intake and .714 in. exhaust side; duration at .050 in. for intake is 266 degrees and 274 degrees exhaust side. Hardened chromoly retainers are used, with dual valve springs 1.50 in. coil diameter. Additional specs: Aluminum roller rockers with 1.7:1 ratios, and high performance one-piece push rods are installed. A new Chevrolet Performance Parts tall deck single-plane intake manifold and a 1,150 CFM Dominator carburetor deliver the air. A multiple spark discharge distributor handles ignition; spark plugs and wire are included. New screened and louvered windage trays and high-rpm torsional dampers are used.
Specification
ZZ572-720R Deluxe Tech Specs
Part Number: 19331585
Engine Type: Chevy Tall Deck Big-Block V-8
Displacement (cu. in.): 572
Bore x Stroke (in.): 4.560 x 4.375
Block (P/N 19212195): Cast-iron with four-bolt main caps
Crankshaft (P/N 88961554): Forged steel
Connecting Rods (P/N 88962926): Forged steel, shot peened
Pistons (P/N 88963227): Forged aluminum
Camshaft Type (P/N 19210722): Mechanical roller
Camshaft Lift (in.): .714 intake / .714 exhaust
Camshaft Duration (@.050 in.): 278° intake / 282° exhaust
Cylinder Heads (P/N 88961160): Aluminum rectangular port, 118-cc chambers
Valve Size (in.): 2.250 intake / 1.880 exhaust stainless steel
Compression Ratio: 12:1
Rocker Arms (P/N 12361323): Aluminum, roller style
Rocker Arm Ratio: 1.7:1
Distributor (P/N 10093387): Electronic ignition
Carburetor (P/N 19170096): 1150-cfm Dominator
Water Pump (P/N 19168602): Aluminum, short-style
Spark Plugs and Wires: Included
Recommended Fuel: 110-octane race gas
Ignition Timing: Base 8° BTDC, 36° Total
Maximum Recommended rpm: 6750
Balanced: Internal
