ZZ427 480hp Big Block Chevy Crate Engine - 19331572

Due to ever-changing availability, please contact us before ordering. 
A MODERN TAKE ON THE CLASSIC L88The L88 427 was the ultimate expression of Chevy’s production Big-Block power, combining a rigid iron cylinder block with lightweight aluminum cylinder heads and a single, four-barrel carburetor. Chevrolet Performance engineers have recreated that classic, raspy rat engine, but with updated components that enhance drivability – and performance!
Our engine assembly features the latest-generation block casting with four-bolt main caps, an all-forged rotating assembly for exceptional strength and durability, and a hydraulic roller camshaft instead of the original L88’s flat tappet cam, for greater drivability and a broader performance range. It also features aluminum oval-port cylinder heads with 2.19/1.88-inch valves and a pump-gas-friendly 10.0:1 compression ratio.
Whether you’re building a ’69 COPO Camaro resto-mod tribute, a modified mid-year Corvette or a street-tire class winner, this heritage-inspired crate engine delivers the performance that built the Big-Block’s legendary reputation.
TECH SPECSPart Number: 19331572 (Old PN: 19166393)Engine Type: Chevy Big-Block V-8Displacement (cu in): 427Bore x Stroke (in): 4.250 x 3.750Block (P/N 19170538): Cast-iron with 4-bolt main capsCrankshaft (P/N 19171620): Forged steelConnecting Rods (P/N 19211226): Forged steelPistons (P/N 19171618): Forged aluminumCamshaft Type (P/N 12366543): Hydraulic rollerValve Lift (in): .527 intake / .544 exhaustCamshaft Duration (@.050 in): 224° intake / 234° exhaustCylinder Heads (P/N 19331423): Aluminum oval port, 110cc chambersValve Size (in): 2.190 intake / 1.880 exhaustCompression Ratio: 10.1:1Rocker Arms (P/N 19210726): Aluminum roller styleRocker Arm Ratio: 1.7:1Distributor (P/N 88961867): HEI typeCarburetor (P/N 19170093): 770-cfmWater Pump (P/N 19168602): Aluminum short-styleSpark Plugs and Wires: IncludedFlexplate (P/N 12561217): 14"Recommended Fuel: Premium pumpIgnition Timing: 36° Total at 4,000 rpmMaximum Recommended rpm: 6,400Balanced: InternalIntake Manifold (P/N 12363406): Dual Plane
INSTALLATION NOTES• Due to crate fitment, the carburetor is shipped in a separate box and needs to be installed by an engine installer• Requires addition of starter and fuel pump (not included)• Clutch linkage bosses are drilled and tapped. When using cast-iron exhaust manifolds, lower head bolts may need to be replaced with bolts with shorter heads, for clearance• Comes with an internally balanced 14" automatic transmission flexplate. Requires flywheel designed for internally balanced engines.• Designed for pre-1976 street vehicles or any off-road vehicle• Not intended for marine applications
NOTE: Distributor with melonized steel gear MUST be used with long-blocks and Partial engines with steel camshafts, or engine damage will occur.