LS CRATE ENGINES
The engine family commonly called the LS series debuted in 1997. General Motors called it the Gen-III Small-Block, with the iron-block versions in trucks and the all-aluminum LS1 introduced in the then-new C5 Corvette. GM has continued to refer to its modern V-8 engine family as Gen III and Gen IV, but to the enthusiasts who quickly grasped the tremendous performance potential of the engines, every engine of the platform is nicknamed “LS.” See how LS crate engines compare in horsepower, torque, and other technical specifications.
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Part Number |
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19301326 |
19301358 |
19301360 |
Engine Type |
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LS-Series Gen-IV Small-Block V-8 |
LS-Series Gen-IV Small-Block V-8 |
LS-Series Gen-IV Small-Block V-8 |
Horsepower |
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430 hp @ 5900 rpm |
495 hp @ 6200 rpm |
525 hp @ 6200 rpm |
Torque |
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425 lb-ft @ 4600 rpm |
473 lb-ft @ 5200 rpm |
486 lb-ft @ 5200 rpm |
Displacement (cu. in.) |
||
376 (6.2L) |
376 cu in (6.2L) |
376 (6.2L) |
Block |
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Cast-aluminum with 6-bolt, cross-bolted main caps |
Cast-aluminum with 6-bolt, cross-bolted main caps |
Cast aluminum with 6-bolt, cross-bolted main caps |
Crankshaft |
||
Nodular iron |
Nodular iron |
Nodular iron |
Camshaft |
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Hydraulic roller |
Hydraulic roller |
Hydraulic roller |
Valve Lift (intake) |
||
.551 in |
2.165 in |
2.165 in |
Valve Lift (exhaust) |
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.522 in |
1.590 in |
1.590 in |
Camshaft Duration (@.050) |
||
204° intake/211° exhaust |
193° intake/200° exhaust |
226° intake/236° exhaust |
Cylinder Heads |
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Aluminum L92-style port; as cast with 68-cc chambers |
Aluminum L92-style port; as cast with 68-cc chambers |
Aluminum L92-style port; as cast with 68-cc chambers |
Compression Ratio |
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10.7:1 |
10.7:1 |
10.7:1 |
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|
![]() |
![]() |
|
|
---|---|
Part Number |
|
19301326 |
19301326 |
Engine Type |
|
LS-Series Gen-IV Small-Block V-8 |
LS-Series Gen-IV Small-Block V-8 |
Horsepower |
|
430 hp @ 5900 rpm |
430 hp @ 5900 rpm |
Torque |
|
425 lb-ft @ 4600 rpm |
425 lb-ft @ 4600 rpm |
Displacement (cu. in.) |
|
376 (6.2L) |
376 (6.2L) |
Block |
|
Cast-aluminum with 6-bolt, cross-bolted main caps |
Cast-aluminum with 6-bolt, cross-bolted main caps |
Crankshaft |
|
Nodular iron |
Nodular iron |
Camshaft |
|
Hydraulic roller |
Hydraulic roller |
Valve Lift (intake) |
|
.551 in |
.551 in |
Valve Lift (exhaust) |
|
.522 in |
.522 in |
Camshaft Duration (@.050) |
|
204° intake/211° exhaust |
204° intake/211° exhaust |
Cylinder Heads |
|
Aluminum L92-style port; as cast with 68-cc chambers |
Aluminum L92-style port; as cast with 68-cc chambers |
Compression Ratio |
|
10.7:1 |
10.7:1 |
|
|
![]() |
![]() |
|
|
---|---|
Part Number |
|
19301326 |
19301358 |
Engine Type |
|
LS-Series Gen-IV Small-Block V-8 |
LS-Series Gen-IV Small-Block V-8 |
Horsepower |
|
430 hp @ 5900 rpm |
495 hp @ 6200 rpm |
Torque |
|
425 lb-ft @ 4600 rpm |
473 lb-ft @ 5200 rpm |
Displacement (cu. in.) |
|
376 cu in (6.2L) |
376 cu in (6.2L) |
Block |
|
Cast-aluminum with 6-bolt, cross-bolted main caps |
Cast-aluminum with 6-bolt, cross-bolted main caps |
Crankshaft |
|
Nodular iron |
Nodular iron |
Camshaft |
|
Hydraulic roller |
Hydraulic roller |
Valve Lift (intake) |
|
.551 in |
2.165 in |
Valve Lift (exhaust) |
|
.522 in |
1.590 in |
Camshaft Duration (@.050) |
|
204° intake/211° exhaust |
219° intake/228° exhaust |
Cylinder Heads |
|
Aluminum L92-style port; as cast with 68-cc chambers |
Aluminum L92-style port; as cast with 68-cc chambers |
Compression Ratio |
|
10.7:1 |
10.7:1 |
![]() |
|
---|
Part Number |
19301360 |
Engine Type |
LS-Series Gen-IV Small-Block V-8 |
Horsepower |
525 hp @ 6200 rpm |
Torque |
486 lb-ft @ 5200 rpm |
Displacement (cu. in.) |
376 cu in (6.2L) |
Block |
Cast-aluminum with 6-bolt, cross-bolted main caps |
Crankshaft |
Nodular iron |
Camshaft |
Hydraulic roller |
Valve Lift (intake) |
2.165 in |
Valve Lift (exhaust) |
1.590 in |
Camshaft Duration (@.050) |
226° intake/236° exhaust |
Cylinder Heads |
Aluminum L92-style port; as cast with 68-cc chambers |
Compression Ratio |
10.7:1 |