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The all new LSX Crate Engines are here!

LSX376 In Stock

LSX454 Just Released - Call now to order

 
LSX376

LSX376 — 19171049

GM Performance Parts takes the LSX Bowtie block and combines it with the LS3’s L92-style heads to create the LSX376 crate engine. This engine will be delivered without an intake manifold (and other accessories), but can be fitted with either a carburetor or production-style injection system to make it suitable for your street rod, ’57 Chevy or ’71 Camaro.

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Specifications:

  Part Number: 19171049 Cylinder Heads (P/N 12615879): Aluminum L92 style port; “as cast”
  Engine Type: LSX Series Gen IV small-block V-8   with 68cc chambers
  Displacement (cu in): 376 (6.2L) Valve Size (in): 2.16 intake / 1.59 exhaust
  Bore x Stroke (in): 4.06 x 3.62 (103.25 x 92 mm) Compression ratio: 10.7:1
  Block (P/N 19243171): LSX cast-iron with 6-bolt Rocker Arms (P/N 12569167 int): Investment-cast, roll trunnion
    cross-bolted main caps Rocker Arms (P/N 10214664 exh): Investment-cast, roll trunnion
  Crankshaft (P/N 12597569): Nodular iron Rocker Arm Ratio: 1.7:1
  Connecting Rods (P/N 12607475): Powdered metal Recommended Fuel: 92 octane
  Pistons (P/N 12166957): Forged aluminum Maximum Recommended RPM: 6600
  Camshaft Type (P/N 12603844): Hydraulic roller Reluctor Wheel: 58X
  Valve Lift (in): 0.551" intake / 0.522" exhaust Balanced: Internal
  Camshaft Duration (@0.050 in): 204° intake / 211° exhaust

 

LSX454 - 19244611

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.



We tested the LSX454 combination on none other than Reggie Jackson’s custom 1969 Camaro, which showcased the possibilities of high 10s in the quarter-mile, 150-mph top speed and more.
See our LS1 Engine Kit Installation Guide P/N 88959384 for installing an LS engine in an older car.

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.

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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
 

 

 

 

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Last modified: 11/20/13.