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454 HO

454 HO

SKU: 19433409

Our most economical Big-Block crate engine delivers 500 lb-ft


Chevrolet Performance’s 454 HO crate engine is classic in its own time, offering enthusiasts an affordable Big-Block combination with performance specs that will make you think it’s 1970 all over again — with 438 horsepower and 500 asphalt-wrinkling lb-ft of torque.


The foundation of the 454 HO is a brand-new, updated cylinder block that incorporates many strength and performance design enhancements – making it a smart and economical alternative to rebuilding. We also add an all-forged reciprocating assembly for maximum durability, a roller camshaft, and a set of rectangular-port iron cylinder heads.


We deliver the 454 HO with a water pump, balancer, 14-inch flexplate, and aluminum intake manifold. Add a carburetor, ignition system, and starter and your budget Big-Block will be ready to roar. All of the necessary parts are available from Chevrolet Performance.


If you want the strength and convenience of the 454 HO bottom end, but want to add your own heads and induction system, use our 454 partial engine (P/N 12498778).

  • Horsepower

    438 HP

  • Torque

    500 LB-FT

  • Tech Specs

    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 12562920): Iron rectangular port; 118-cc chambers

    Valve Size (in.): 2.190 intake / 1.880 exhaust

    Compression Ratio: 8.75:1

    Rocker Arms (P/N 12523976): Stamped steel

    Rocker Arm Ratio: 1.7:1

    Water Pump (P/N 19168606): Cast-iron, long-style

    Flexplate (P/N 10185034): 14"

    Recommended Fuel: 92 octane

    Ignition Timing: Base 4° BTDC, 26° Total

    Maximum Recommended rpm: 5500

    Balanced: External

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