ZZ454/440
469 HP @ 5,500 RPM/ 519 LB-FT TORQUE @3,700 ROPMprice: $10,826
part number: 19419001
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Oval-port aluminum heads deliver big power in an affordable package Our engineers took the 454 HO with its super-tough, all-forged reciprocating assembly and matched it with a set of higher-flow, oval-port aluminum cylinder heads resulting in 469 hp and 518 lb-ft of torque. We dubbed it the ZZ454/440, and its an affordable high-performance big-block for any chassis you can stuff it in. The ZZ454/440 uses our new cylinder block casting for greater strength and performance, while the aluminum heads use smaller, 110-cc combustion chambers to boost compression to 9.6:1, up from 8.5:1 on the 454 HO. We then match the airflow capability with a high-lift, hydraulic roller camshaft that delivers great idle quality and requires no periodic lash adjustments. Our crate engine package includes the ZZ454/440 assembled with a water pump, balancer, aluminum intake manifold, and a 14-inch flexplate. Your Chevrolet Performance dealer can hook you up with the carburetor, starter, ignition system, and other accessories required to get this big-power big-block started.
Part Number: 12568774
Engine Type: Chevy Big-Block V-8
Displacement (cu in): 454
Bore x Stroke (in): 4.250 x 4.000
Block (P/N 19170538): Cast-iron with 4-bolt main caps
Crankshaft (P/N 14096983): Forged steel
Connecting Rods (P/N 19170198): Forged steel
Pistons (P/N 10215228): Forged aluminum
Camshaft Type (P/N 24502611): Hydraulic roller
Camshaft Lift (in): .510 intake / .540 exhaust
Camshaft Duration (@.050 in): 211° intake / 230° exhaust
Cylinder Heads (P/N 12562920): Iron rectangular port; 118cc chambers
Valve Size (in): 2.190 intake / 1.880 exhaust
Compression Ratio: 8.75:1
Rocker Arms (P/N 19260993): Stamped steel
Rocker Arm Ratio: 1.7:1
Water Pump (P/N 19168606): Cast-iron, long-style
Flexplate (P/N 10185034): 14"
Recommended Fuel: Premium pump
Ignition Timing: 36° Total at 4,000 rpm
Maximum Recommended rpm: 5,500
Balanced: External
Intake Manifold (P/N 19131359): Dual Plane
INSTALLATION NOTES
Requires addition of carburetor, starter, fuel pump, distributor and ignition system (not included)
Clutch linkage bosses are 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
Comes with an externally balanced 14" automatic transmission flexplate; use flywheel P/N 14096987 and 11" clutch assembly for manual transmission applications
Designed for pre-1976 street vehicles or any off-road vehicle
Not intended for marine applications