Chevy ZZ427 - 430 BBC

This ZZ427 is built on the legend of the 60's big block Chevy engines. This one is built using a cast iron 4 bolt main block with 9.5:1 compression and a hydraulic roller camshaft. The big block packages gives outstanding performance using low octane fuel to keep your cruising costs down. The 427 rotating assembly is all forged components. Up top, the oval port heads with 2.19-inch intake and 1.88-inch exhaust valves work with 1.7:1 aluminum roller rockers and a .510-inch lift intake/.540-inch lift exhaust camshaft. Completing the induction system is a matched high-flow oval-port aluminum intake that gets fed by a 870 cfm carburetor. Included is an HEI distributor, aluminum water pump, spark plug wires and a 14-inch flexplate. You can rev the 427 up to 6 grand before you shift.

ZZ427 with Cast Iron Block Applications

• 430 horse RAT!
• Pump gas friendly
• 24-month GMPP warranty

*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.

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!