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  • ZZ 454 Big Block Crate Engine
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MSRP

$7,788

Part No.

12498777

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For Off-Road &
STREET

6 Select
Available Mods

Power

Power
440
hp @ 5250 rpm

Oval-port aluminum heads deliver big power in an affordable package

Our 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 lb-ft of torque. We 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 our new cylinder block casting for greater strength and performance, while the aluminum heads use smaller, 110-cc combustion chambers to boost compression to 9.6:1, up from 8.5:1 on the 454 HO. We then match the airflow capability with a high-lift, hydraulic roller camshaft that delivers great idle quality and requires no periodic lash adjustments.

Our crate engine package includes the ZZ454/440 assembled with a water pump, balancer, aluminum intake manifold, and a 14-inch flexplate. Your Chevrolet Performance dealer can hook you up with the carburetor, starter, ignition system, and other accessories required to get this big-power Big-Block started.

ZZ454/440 DYNO

Click on the slider to see the torque and power ratings change with rpm.*

*Approximate values shown.

ZZ454/440 TECH SPECS

Part Number:
12498777
 
 
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:
92 octane
Ignition Timing:
Base 4° BTDC, 26° Total
Maximum Recommended rpm:
5500
Balanced:
External

OWNER RESOURCES

Already own one, but lost some of the paperwork? We’ve got you covered with downloads and links for some of the more important documents below. You’ll find everything from the vital data about your engine’s capabilities to how to install it into your build, even all of the warranty information should you need to make a claim. And don’t forget, the best way we can make sure to get you the latest information on your specific part is to tell us which one you have by registering your engine. No matter what stage of your build you’re in — from shopping for the right part to that part having turned in a few miles — we have the information you need.

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  • INSTALLATION NOTES

    • 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; use flywheel P/N 14096987 and 11" clutch assembly for manual transmission applications
    • Designed for pre-1976 street vehicles or any off-road vehicle
    • Not intended for marine applications
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FINISH OFF YOUR CRATE ENGINE WITH THESE SELECT PARTS

Download a catalog for a full listing of components and related parts.

SuperMatic 4L85-E Four-Speed
Transmission • P/N 19154550

Carburetor, Holley 770-cfm • P/N 19170093

Lightweight Starter • P/N 12606096

Transmission Controller • P/N 19212657

 

Spark Plug Wire Set • P/N 12368383

Distributor, Aluminum Billet HEI • P/N 88961867

  • 1 Performance MSRP The Manufacturer's Suggested Retail Price excludes tax, shipping and installation.