ZZ454/440 454ci Engine w/ Aluminum Heads 469 HP @ 5500 RPM

Name: ZZ454/440 454ci Engine w/ Aluminum Heads 469 HP @ 5500 RPM
Brand: CHEVROLET PERFORMANCE
SKU: 809-19331574
Price: 10095.22 USD
Availability: InStock

^$10,095²²

Truck Freight

Ships on 09/11/2026

Lowest Price Guarantee

ZZ454/440 454ci Engine

Aluminum Cylinder Heads
469 HP @ 5500 RPM
519 ft/lbs TQ @ 3700 RPM

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
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.
Engine Break-In Procedure
Use conventional or break-in oil (non-synthetic) for the first oil change, be sure to check the oil level in the engine and prime the oil system with an engine priming tool.
Engines with flat tappet hydraulic cams only - Run the engine between 2,000 and 2,500 RPM's, with no-load on the engine for the first 30 minutes. This is critical to break in the camshaft.
Drive the vehicle with varying speeds and loads on the engine for the first 30 miles. Be sure not to use a lot of throttle or high RPM. Run five or six medium-throttle accelerations to about 3000 RPM (40 to 50 MPH), then letting off in gear and coasting back down to 20 MPH. Run a couple of hard throttle accelerations up to about 5000 RPM (55 to 60 MPH), then letting off in gear and coasting back down to 20 MPH.
Let the engine cool and change the oil and filter using conventional (non-synthetic) oil and check coolant level, top off if necessary. Drive the next 500 miles normally, without high RPM's (below 5000 RPM), hard use, or extended periods of high loading. Change the oil and oil filter again using conventional (non-synthetic) oil. Keep an eye on oil level during the first thousand or so miles.
It would be suitable to use synthetic motor oil after the second recommended oil change and mileage accumulation.

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

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 30 horses, while still offering 519 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: Premium pump (92 octane)
Ignition Timing: 36° Total @ 4000 rpm
Maximum Recommended RPM: 5500
Balanced: External

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