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.

With a carburettor and high-flow GM Performance Parts intake manifold (sold separately), they are good for about 620 hp and 600 ft.-lbs. of torque or about 580 hp and 600 ft.-lbs. with fuel injection.

Due to the number of application variations, the GM Performance Parts LSX 454 crate engines do not include an oil pan (dust pan supplied), and the valve covers do not include provisions for mounting the ignition coil brackets.

• 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 aluminium
• Camshaft Type (P/N 19166972): Hydraulic roller
• Valve Lift (in): 0.635" intake / 0.635" exhaust
• Camshaft Duration (@0.050"): 236° intake / 246° exhaust
• Cylinder Heads (P/N 19201806): Aluminium LSX-LS7 port; with "as cast" 70cc chambers
• Valve Size : 2.20" titanium intake / 1.61" exhaust
• Compression ratio: 11.0:1
• Rocker Arms (P/N 12579615 int): Investment-cast, roller trunnion
• Rocker Arms (P/N 12579617 exh): Investment-cast, roller trunnion
• Rocker Arm Ratio: 1.8:1
• Recommended Fuel: 92 octane
• Maximum Recommended RPM: 6500
• Reluctor Wheel: 58X
• Balanced: Internal

Product Reviews for GM19244611 - GM