Chevy ZZ572/720R Deluxe

ZZ572/720R crate engines are the meanest, nastiest motors on the market. With 720 HP and 685 ft lbs of torque, you're in for a thrill ride in whatever vehicle you put it in. Essentially, the engine package uses 12:1 pistons, a massive roller camshaft and tall deck bowtie heads in a ZZ572/620 HP engine block. Internal rotating components are forged for strength and durability. A 4340 forged steel crank is used along with shot peened forged steel rods and forged aluminum pistons. A solid roller camshaft has .714 inches of lift to feed the hungry big block.

The Deluxe ZZ572/720R comes with a 1090-cfm Demon four-barrel carburetor, tall-deck single-plane intake manifold, HEI distributor, aluminum short-style water pump and 8 mm spark plug wires. Distinctive “572” cast aluminum valve covers complete the package. You only need a starter to start it up.

  • Build a solid 9-second race car
  • A street and race car
  • Earth shattering neighbor waker

*Applications have not been validated. They are merely suggestions of how you might enjoy your GM Performance Parts crate engine. Some applications may affect engine warranty. See specific warranty information. Some applications may not be emission legal; check state and local ordinances.

Part Number: 12498827
Engine type: Chevy big-block V-8
Displacement (cu in): 572
Bore x stroke (in): 4.560 x 4.375
Block (P/N 25534368): Cast iron with 4-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 88962216): Mechanical roller
Camshaft lift (in): .714 intake / .714 exhaust
Camshaft duration (@.050 in): 266'c1 intake / 274'c1 exhaust
Cylinder heads (P/N 88961160): Aluminum rectangular port, 118 cc chambers
Valve size (in): 2.25 intake / 1.88 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): HEI
Carburetor (P/N 88962217): 1090 cfm
Water pump (P/N 14058915): Aluminum, short-style
Spark plugs & wires: Included
Recommended fuel: 110 octane race gas
Ignition timing: 36'c1 total @ 5000 rpm
Maximum rpm: 6750

572 - 720R engine image

Part #:12498827

572/720R dyno image

Installation Notes

  • Clutch linkage boss is cast and machined in block, but must be drilled and tapped. When using cast iron exhaust manifolds, lower head bolts may need to be replaced with bolts with shorter heads, for clearance.
  • Requires addition of starter and fuel pump (not included).
  • Gen VI tall-deck block has machined mechanical fuel pump boss
  • Requires internally balanced flywheel for manual transmission applications.
  • Intended for pre-1977 street vehicles and all off-road vehicles.
  • Not intended for marine applications.
  • Big, sticky slicks will help hook up this monster!