Vintage displacement. thoroughly modern technology, stunning performance.

An engine with 454 cubic inches of displacement will always be associated with higher-performance Chevys, and that tradition continues with the all-new LSX454 crate engine. We started with the LSX Bowtie block, stuffed it with an all-forged, super-tough rotating assembly, bolted on a pair of our new deep-breathing LSX six-bolt cylinder heads.

The new LSX six-bolt cylinder heads are based on the racing-derived LS7 heads that help deliver more than 500 horsepower in the Corvette Z06. They enable tremendous low-end torque and great high-rpm power.

The LSX454 is delivered in Long block form. It also comes dressed with great-looking, all-new orange powder-coated valve covers with “LSX454” logos engraved and painted black.

NOTE: Due to the number of application variations, the LSX454 crate engine is supplied with a dust shield instead of an oil pan. See the LS Engine Components section for production-style oil pan choices. Also, the LSX454 valve covers do not include provisions for mounting the ignition coil brackets. Aftermarket or custom relocation brackets must be used.

LSX454 TECH SPECS

Part Number: 19244611

Engine Type: LSX Series Gen IV Small-Block V-8

Displacement (cu in): 454 cu in (7.4L)

Bore X Stroke (in): 4.185 x 4.125 (106.3 x 104.8 mm)

Block (P/N 19243172): LSX cast-iron with 6-bolt. cross-bolted main caps.

Crankshaft (P/N 19170391): 4340 forged steel

Connecting Rods (P/N 19166964): 4340 forges steel

Pistons (P/N 19166958): Forged aluminum

Camshaft Type (P/N 19166972): Hydraulic roller

Valve Lift (in): 0.635" intake / 0.635" exhaust

Camshaft Duration (@0.050 in ): 236deg intake / 246deg exhaust

Cylinder Heads (P/N 19201806): Aluminum LSX-LS7 port; with "as cast" 70cc chambers

Valve Size (in): 2.20 titanium intake / 1.61 exhaust

Compression ratio: 11.0:1

Rocker Arms (P/N 12579615 int): Investment-cast, roll trunnion

Rocker Arms (P/N 12579617 exh): Investment-cast, roll trunnion

Rocker Arm Ratio: 1.8:1

Recommended Fuel: 92 octane

Maximum Recommended RPM: 6500

Retuctor Wheel: 58X

Balanced: Internal

This engine includes shipping to your local UPS freight hub for pickup. If you wish to have the order shipped to your billing address, please also order part number AD200, for the additional delivery fee.