Lowest Price Guaranteed - Login To View

Chevrolet Performance 19260833 7.4L LSX 454 Crate Engine

Brand: Chevrolet Performance

Part Number: 19260833

bar
bar
bar

The product's part number has been changed or discontinued. Please see the details below.

Lowest Price Guaranteed
Click Here


bar

bar


Why?

FREE Shipping!

This part number has been superseded. The new product 19332316 is located here. 

 

LSX454 Crate Engine

627hp @ 6,300 rpm / 586 lb.-ft. @ 5,100 rpm

 

An LSX with Big-Block Power!

With the Chevrolet Performance LSX Bowtie small block crate motor, we’ve built a 21st century 454 with the latest technology. It’s lighter and more compact than an original Big Block 454 – while delivering Big Block output of 627 hp and 590 lb-ft – but requires no more space under the hood than a production LS engine.

GM's LSX454 is filled with an all-forged, super-tough rotating assembly and features a pair of our deep-breathing LSX six-bolt cylinder heads. It also comes dressed with great-looking, orange powder-coated valve covers with engraved “LSX454” logos.

Chevy Performance delivers the LSX454 crate engine without an intake manifold and other accessories. Use LSX-LS7 single-plane carbureted intake manifold P/N 19244033. The LSX454 valve covers do not include provisions for mounting ignition coil brackets. Aftermarket or custom relocation brackets must be obtained. It also includes an 8-bolt crankshaft flange that may require an adapter for use with some transmissions.

 

19260833 Chevrolet Crate Motor

LSX454 Tech Specs:
Part Number: 19260833
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 19260099): LSX cast-iron with 6-bolt, cross-bolted main caps
Crankshaft (P/N 19244018): 4340 forged steel with 8-bolt flange
Connecting Rods (P/N 19166964): 4340 forged steel
Pistons (P/N 19166958): Forged aluminum
Camshaft Type (P/N 19166972): Hydraulic roller
Valve Lift (in): 0.648" intake / 0.648" exhaust
Camshaft Duration (@0.050 in): 236° intake / 246° exhaust
Cylinder Heads (P/N 19201806): Aluminum LSX-LS7 port; with “as cast” 70cc chambers
Valve Size (in): 2.200 titanium intake/1.610 hollow, sodium-filled 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: Premium pump
Maximum Recommended RPM: 6,500
Reluctor Wheel: 58x
Balanced: Internal

 

Installation Notes:
• Assembly does not include any electronics
• Requires LS-7 pattern intake manifold
• Intended for pre-1976 street vehicles or any off-road vehicle
• Not intended for marine applications
• Requires LSX Ignition Controller P/N 19171130 when using a carburetor
• Requires the purchase and installation of an oil pan (dust shield installed for shipment)
• LSX 8-bolt crank flange
• Requires premium fuel


Reviews