Aluminum heads add big power 

We 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.

PART NO. 19331574


469 HP @5500 RPM


519 LB/FT @3700 RPM

High-performance Big-Block 

Aluminum oval-port cylinder heads are mounted on our latest-generation block casting with four-bolt main caps, which is filled with an all-forged rotating assembly for exceptional strength and durability.

Connect & Cruise Powertrain System

Connect & Cruise Crate Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for retrofit installations in older vehicles.  

Installation Guides

Find everything from vital data about your engine’s capabilities to how to install it into your build.

ZZ454-440 Tech Specs

  • Part Number: 19331574
  • 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 four-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 12363392): Aluminum oval port; 110-cc chambers
  • Valve Size (in.): 2.190 intake / 1.880 exhaust
  • Compression Ratio: 9.6:1
  • Rocker Arms (P/N 12368082): 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 @ 4,000 rpm
  • Maximum Recommended rpm: 5500
  • Balanced: External

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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing or other “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.