Chevy Big-Block V-8 ZZ454/440 - 19433410

Aluminum Oval-Port Heads Add Power!

Our engineers took the tough 454 HO and matched it with a set of higher-flow, oval-port aluminum cylinder heads to pick up an additional 30 horses and push the torque to a strong 519 lb.-ft. The heads are filled with 2.19/1.88-inch valves that process the airflow through this big-power Big-Block and save weight over iron heads.

Along with the aluminum heads, the ZZ454/440 also features our latest-generation block casting with four-bolt main caps, which is filled with an all-forged rotating assembly for exceptional strength and durability. There’s also a high-lift hydraulic roller camshaft for excellent drivability and a broad performance range. The crate engine assembly includes the water pump, balancer, aluminum intake manifold and a 14-inch flexplate. Add the carburetor, starter, ignition system and other accessories to get this big-power Big-Block running.

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
• Not intended for marine applications

Technical Specifications

Part Number: 19433410
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
Intake Manifold (P/N 12363420 ): Dual plane
Camshaft Type (P/N 24502611 ): Hydraulic roller
Valve Lift (in ): .510 intake / .540 exhaust
Camshaft Duration (@.050 in ): 211° intake / 230° exhaust
Cylinder Heads (P/N 19418909 ): Aluminum oval port; 110cc chambers
Valve Size (in ): 2.190 intake / 1.880 exhaust
Compression Ratio: 9.6:1
Rocker Arms (P/N 12675724 ): Stamped steel
Rocker Arm Ratio: 1.7:1
Water Pump (P/N 19168606 ): Cast-iron, long-style
Recommended Fuel: Premium pump
Ignition Timing: 36° Total @ 4,000 rpm
Maximum Recommended rpm: 5,500
Balanced: External
Flexplate (P/N 10185034 ): 14"

NOTE: Distributor with melonized steel gear MUST be used with long-blocks and partial engines with steel camshafts, or engine damage will occur.