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Chevrolet Performance 12498777 - Chevrolet Performance ZZ454/440 454ci/440HP Engine

Chevrolet Performance 12498777 - Chevrolet Performance ZZ454/440 454ci/440HP Engine

JEGS Part Number: 809-12498777

ZZ454/440 454ci Engine
  • 440 HP @ 5250 RPM
  • 500 ft/lbs TQ @ 3250 RPM

    Chevrolet Performance 12498777 - Chevrolet Performance ZZ454/440 454ci/440HP Engine Details

  • Requires addition of carburetor, starter, 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
  • Designed for pre-1976 street vehicles or any off-road vehicle
  • Not intended for marine applications
  • Distributor with melonized steel gear MUST be used with steel camshafts, or engine damage will occur.

  • Oval-Port Aluminum Heads Deliver Big Power
    in an Affordable Package!

    Free Shipping!

    Chevrolet Performance 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 to pick up an additional 15 horses, while still offering 500 ft/lbs of torque. They dubbed it the ZZ454/440, and it's an affordable high-performance Big-Block for any chassis you can stuff it in.

    The ZZ454/440 uses the new cylinder block casting for greater strength and performance, while the aluminum heads use smaller, 110cc combustion chambers to boost compression to 9.6:1, up from 8.5:1 on the 454 HO. Then matched the airflow capability with a high-lift, hydraulic roller camshaft that delivers great idle quality and requires no periodic lash adjustments.

    This crate engine package includes the ZZ454/440 assembled with a water pump, balancer, aluminum intake manifold, and a 14-inch flexplate. To simply finish up this package, you will need a carburetor, starter, ignition system, and other accessories. Don't sweat it, JEGS has all the components you need to get this big-power Big-Block started.

    ZZ454/440 TECH SPECS:
  • Engine Type: Chevy Big-Block V-8
  • Displacement: 454ci
  • Bore x Stroke: 4.250'' x 4.000''
  • Block: Cast-iron with four-bolt main caps
  • Crankshaft: Forged steel
  • Connecting Rods: Forged steel
  • Pistons: Forged aluminum
  • Camshaft Type: Hydraulic roller
  • Camshaft Lift: .510'' intake / .540'' exhaust
  • Camshaft Duration (@.050 in.): 211° intake / 230° exhaust
  • Cylinder Heads: Aluminum oval port, 110cc combustion chambers
  • Valve Size: 2.190'' intake / 1.880'' exhaust
  • Compression Ratio: 9.6:1
  • Rocker Arms: Stamped steel
  • Rocker Arm Ratio: 1.7:1
  • Water Pump: Cast-iron, long-style
  • Flexplate: 14'' diameter
  • Recommended Fuel: 92 octane
  • Ignition Timing: Base 4° BTDC, 26° Total
  • Maximum Recommended RPM: 5500
  • Balanced: External
  • JEGS Easy Kits are designed by JEGS high performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck.

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