Big-Block Crate Engines - ZZ454/440

Chevrolet Performance 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 Part Number 14096987 and 11" clutch assembly for manual transmission applications
• Not intended for marine applications

TECH SPECS

• 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 19433024): Forged aluminum
• Intake Manifold (P/N 12363406): 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 12708488): 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.