LSX CRATE ENGINES
Chevrolet Performance’s LSX crate engines take LS power to the next level, with racing-engineered combinations that deliver power with strength for your custom car. The LSX series of crate engines are based on the LSX Bowtie Block and use a number of production-based and LSX high-performance parts to deliver ultimate performance engines that were never offered in production vehicles. See how this Chevy engine family measures up with comparisons of horsepower, torque, and other technical specifications.
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Part Number |
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19355575 |
19260831 |
19355573 |
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Engine Type |
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LSX-Series Gen-IV Small-Block V-8 |
LSX-Series Gen-IV Small-Block V-8 |
LSX-Series Gen-IV Small-Block V-8 |
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Horsepower |
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473 hp @ 6000 rpm |
476 hp @ 5900 rpm |
627 hp @ 6300 rpm |
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Torque |
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444 lb-ft @ 5000 rpm |
444 lb.-ft. @ 5000 rpm |
586 lb-ft @ 5100 rpm |
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Displacement (cu. in.) |
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376 (6.2L) |
376 (6.2L) |
454 (7.4L) |
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Block |
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LSX cast iron with 6-bolt, cross-bolted main caps |
LSX cast iron with 6-bolt, cross-bolted main caps |
LSX cast iron with 6-bolt, cross-bolted main caps |
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Crankshaft |
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Forged steel |
Nodular iron |
4340 forged steel with 8-bolt flange |
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Camshaft |
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Hydraulic roller |
Hydraulic roller |
Hydraulic roller |
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Valve Lift (intake) |
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2.160 in |
.551 in |
.648 in |
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Valve Lift (exhaust) |
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1.550 in |
.522 in |
.648 in |
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Camshaft Duration (@.050) |
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210° intake/230° exhaust |
204° intake/211° exhaust |
236° intake/246° exhaust |
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Cylinder Heads |
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LSX-LS3 rectangular port; with as-cast 68-cc chambers and 6-bolt attachment |
LS3 rectangular port; with as-cast 68-cc chambers |
Aluminum LSX-LS7 port; with as-cast 70-cc chambers |
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Compression Ratio |
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9.0:1 |
9.0:1 |
11.0:1 |
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|
|
|
|
|
|
|
|---|---|
|
Part Number |
|
|
19355575 |
19260831 |
|
Engine Type |
|
|
LSX-Series Gen-IV Small-Block V-8 |
LSX-Series Gen-IV Small-Block V-8 |
|
Horsepower |
|
|
473 hp @ 6000 rpm |
476 hp @ 5900 rpm |
|
Torque |
|
|
444 lb-ft @ 5000 rpm |
444 lb.-ft. @ 5000 rpm |
|
Displacement (cu. in.) |
|
|
376 (6.2L) |
376 (6.2L) |
|
Block |
|
|
LSX cast iron with 6-bolt, cross-bolted main caps |
LSX cast iron with 6-bolt, cross-bolted main caps |
|
Crankshaft |
|
|
Forged steel |
Nodular iron |
|
Camshaft |
|
|
Hydraulic roller |
Hydraulic roller |
|
Valve Lift (intake) |
|
|
2.160 in |
.551 in |
|
Valve Lift (exhaust) |
|
|
1.550 in |
.522 in |
|
Camshaft Duration (@.050) |
|
|
210° intake/230° exhaust |
204° intake/211° exhaust |
|
Cylinder Heads |
|
|
LSX-LS3 rectangular port; with as-cast 68-cc chambers and 6-bolt attachment |
LS3 rectangular port; with as-cast 68-cc chambers |
|
Compression Ratio |
|
|
9.0:1 |
9.0:1 |
|
|
|
|---|
|
Part Number |
|
19355573 |
|
Engine Type |
|
LSX-Series Gen-IV Small-Block V-8 |
|
Horsepower |
|
627 hp @ 6300 rpm |
|
Torque |
|
586 lb-ft @ 5100 rpm |
|
Displacement (cu. in.) |
|
454 (7.4L) |
|
Block |
|
LSX cast iron with 6-bolt, cross-bolted main caps |
|
Crankshaft |
|
4340 forged steel with 8-bolt flange |
|
Camshaft |
|
Hydraulic roller |
|
Valve Lift (intake) |
|
.648 in |
|
Valve Lift (exhaust) |
|
.648 in |
|
Camshaft Duration (@.050) |
|
236° intake/246° exhaust |
|
Cylinder Heads |
|
Aluminum LSX-LS7 port; with as-cast 70-cc chambers |
|
Compression Ratio |
|
11.0:1 |
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