LSX454 Long Block Kit - GM (19355573)

  • List Price: $15,107.97
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  • Sale Price: $12,690.70
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Manufacturer Warranty Minimum of 12 Months
Guaranteed Fitment Always the correct parts
Shop with Confidence Your information is safe
In-House Experts We know our products


  • Genuine:
    Buick, GMC, Cadillac, Hummer, Saturn, Oldsmobile, Pontiac, Chevrolet Parts
  • SKU: 19355573
  • Other Names: Engine
  • Description:

    With the LSX Bowtie block, 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 586 lb.-ft. - but requires no more space under the hood than a production LS engine.
    The 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.
    Chevrolet Performance delivers the engine without an intake manifold and other accessories. Use LSX-LS7 singleplane 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.
    Part Number: 19332316
    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 19354239): 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

    • Assembly does not include any electronics
    • Requires LS7 pattern intake manifold
    • Assembly shipped without an intake manifold
    • Requires the purchase and installation of an oil pan (dust shield installed for shipment)
    • 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
    • LSX 8-bolt crank flange
    • Requires premium fuel

  • Condition: New
  • Replaces: 19244611, 19260833, 19332316

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