Chevrolet Performance 427 C.I. Big Block Crate Engine 480HP

This engine (CMP19331572) is made with lightweight aluminum cylinder heads on a rigid block. It also uses a 4-barrel carburetor an an all-forged rotating assembly. They hydraulic roller cam replaces a flat tappet cam design, enhancing performance for restomod and street vehicles.

Features and Benefits:
- Engine Type: Chevy Big-Block V8
- Displacement (cu in): 427
- Bore x Stroke (in): 4.250 x 3.750
- Block (P/N 10243870): Cast-iron with 4-bolt main caps
- Crankshaft: Forged steel
- Connecting Rods: Forged steel
- Pistons: Forged aluminum
- Camshaft Type: Hydraulic roller
- Camshaft Lift (in): .527 intake / .544 exhaust
- Camshaft Duration (@.050 in): 224 degrees intake / 234 degrees exhaust
- Cylinder Heads: Aluminum oval port, 110cc chambers
- Valve Size (in): 2.190 intake / 1.880 exhaust
- Compression Ratio: 10.1:1
- Rocker Arms: Aluminum roller style
- Rocker Arm Ratio: 1.7:1
- Distributor: HEI
- Carburetor: 770-cfm
- Water Pump: Aluminum, short-style
- Spark Plugs and Wires: Included
- Flexplate: 14"
- Recommend Fuel: Premium pump
- Ignition Timing: 36 degrees Total at 4,000 rpm
- Maximum Recommended rpm: 6,400
- Balanced: Internal
- Intake Manifold: Dual Plane

Additional Notes:
- Due to crate fitment, the carburetor is shipped uninstalled and needs to be installed by an engine installer.
- Requires addition of starter and fuel pump (not included).
- Clutch linkage boss is now 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).
- Comes with a 14" automatic transmission flexplate. Requires internally balanced flywheel for manual transmission applications.
- Not intended for marine applications.
- Distributor with melonized steel gear MUST be used with long-blocks and Partial engines with steel camshafts, or engine damage will occur.

*Only for use on pre-pollution controlled vehicles: Designed for pre-1976 street vehicles or any off-road vehicle.