Chevy ZZ572-720R Partial Crate Engine
Want to build your own ZZ572/720R, but don’t know where to start? Try our ZZ572/720R partial engine— all of the great bottom end components you need to get going! It comes with the forged crankshaft, rods, and pistons installed in the special orange powder-coated 572 block. This partial engine does not include the camshaft, timing chain, camshaft sprocket, oil pan, oil pump, or front cover. Order all the parts to complete the engine from your GM Performance Parts dealer or finish it off with your own custom parts. Don’t forget to order the special “572 CHEVROLET” cast aluminum valve covers.
NOTE: Intended for pre-1977 street vehicles and all off-road vehicles. Not intended for marine use.
Possible Applications
- Build a solid 9-second bracket car with a Chevy Crate engine
- A street car with no equal
- A show car that shakes the trophies out of the judge’s pocket
*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.
| ZZ572/720R DELUXE TECH SPECS: |
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| Part Number: | 12499529 |
| Engine type: | Chevy small-block V-8 |
| Displacement (cu in): | 350 |
| Bore x stroke (in): | 4.00 x 3.48 |
| Block (P/N 10066034): | Cast iron with 4-bolt main caps |
| Crankshaft (P/N 93426651): | Nodular iron |
| Connecting rods (P/N 10108688): | Powdered metal steel |
| Pistons (P/N 12514101): | Cast aluminum |
| Camshaft type (P/N 3896962): | Hydraulic flat tappet |
| Camshaft lift (in): | .450 intake / .460 exhaust |
| Camshaft duration (@.050 in): | 222° intake / 222° exhaust |
| Cylinder heads (P/N 93438648): | Iron; 76 cc chambers |
| Valve size (in): | 1.94 intake / 1.50 exhaust |
| Compression ratio: | 8.5:1 |
| Rocker arms (P/N 10089648): | Stamped steel |
| Rocker arm ratio: | 1.5:1 |
| Recommended fuel: | 87 octane |
| Ignition timing: | 34° total BTDC |
| Maximum rpm: | 5100 |
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Part #:12498825
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 additional parts (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!
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