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.
Part Number
19355575
19260831
19355573
Engine Type
LSX-Series Gen-IV Small-Block V-8
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
627 hp @ 6300 rpm
Torque
444 lb-ft @ 5000 rpm
444 lb.-ft. @ 5000 rpm
586 lb-ft @ 5100 rpm
Displacement (cu. in.)
376 (6.2L)
376 (6.2L)
454 (7.4L)
Block
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
Crankshaft
Forged steel
Nodular iron
4340 forged steel with 8-bolt flange
Camshaft
Hydraulic roller
Hydraulic roller
Hydraulic roller
Valve Lift (intake)
2.160 in
.551 in
.648 in
Valve Lift (exhaust)
1.550 in
.522 in
.648 in
Camshaft Duration (@.050)
210° intake/230° exhaust
204° intake/211° exhaust
236° intake/246° 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
Aluminum LSX-LS7 port; with as-cast 70-cc chambers
Compression Ratio
9.0:1
9.0:1
11.0:1
1/3
Part Number
19355575
Engine Type
LSX-Series Gen-IV Small-Block V-8
Horsepower
473 hp @ 6000 rpm
Torque
444 lb-ft @ 5000 rpm
Displacement (cu. in.)
376 (6.2L)
Block
LSX cast iron with 6-bolt, cross-bolted main caps
Crankshaft
Forged steel
Camshaft
Hydraulic roller
Valve Lift (intake)
2.160 in
Valve Lift (exhaust)
1.550 in
Camshaft Duration (@.050)
210° intake/230° exhaust
Cylinder Heads
LSX-LS3 rectangular port; with as-cast 68-cc chambers and 6-bolt attachment
Compression Ratio
9.0:1
2/3
Part Number
19260831
Engine Type
LSX-Series Gen-IV Small-Block V-8
Horsepower
476 hp @ 5900 rpm
Torque
444 lb.-ft. @ 5000 rpm
Displacement (cu. in.)
376 (6.2L)
Block
LSX cast iron with 6-bolt, cross-bolted main caps
Crankshaft
Nodular iron
Camshaft
Hydraulic roller
Valve Lift (intake)
.551 in
Valve Lift (exhaust)
.522 in
Camshaft Duration (@.050)
204° intake/211° exhaust
Cylinder Heads
LS3 rectangular port; with as-cast 68-cc chambers
Compression Ratio
9.0:1
3/3
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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