Baddest Engine on the Block 572/620 hp Deluxe
(Part # 12498793)
Special Price: $13,395.00
IN STOCK !!!! GET YOURS TODAY !!!! GM Performance Parts is about to make Chevy aficionados very happy with its all-new ZZ572. The 572ci big-block, is based on the new Sportsman tall-deck Bow Tie Gen-VI block, it is offered in several configurations: short-block, long-block, and two complete turnkey versions. The lesser of the two evils (listed below) will generate 620 hp and 650 lb-ft of torque, and the race version will produce a whopping 720 hp and 685 lb-ft of torque. The main differences are camshaft profile, carburetor size, compression ratio (9.6:1 versus 12.0:1), cylinder-head design, and valvetrain componentry. Choose your weapon wisely!
| Technical Information |
| Horsepower | 620 @ 5500 RPM |
| Torque | 650 lb-ft @ 4500 RPM |
| Max. Recommended RPM | 6000 |
| Compression Ratio | 9.6:1 |
| Block | New! Sportsman Tall Deck Bow Tie Gen VI, 10.200” Deck Height |
| Crankshaft | 4340 forged steel |
| Connecting Rods | Forged 4340 steel, H-beam style, Shot peened |
| Pistons | Forged aluminum with full-floating wristpin |
| Camshaft | Hydraulic roller, 254/264 degrees @ 0.050, 0.632/0.632-inch lift |
| Cylinder Heads | Aluminum rectangular port, 2.25/1.88-inch intake/exhaust valves |
| Intake Valves | 2.25” Stainless steel |
| Exhaust Valves | 1.88” Stainless steel |
| Valve Springs | Dual valve springs, 1.564” coil dia., 1.800” installed height, 197 Lbs. seat pressure |
| Rocker Arms | 1.7:1 roller |
| Intake Manifold | Manifold New! Aluminum tall deck single plane, 4150 series carburetor. |
| Carburetor | 850cfm, mechanical secondary |
| Distributor | H.E.I. |
| Valve Lash | Zero |
| Spark Plugs | R42XLS |
| Fuel | 92 Octane |
| Ignition Timing | 36° total advance |
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