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ATK High Performance Chevy LS 408 Short Blocks

5.0 out of 5 stars 4 Customer Reviews

These ATK High Performance Chevy LS 408 short blocks are made to handle some serious power. The foundation of any high performance engine is a rock-solid short bloc
These ATK High Performance Chevy LS 408 short blocks are made to handle some serious power. The foundation of any high performance engine is a rock-solid short block, so ATK designed and developed these to be just that. They feature a fully forged, balanced, and blueprinted rotating assembly that is available in a variety of configurations to fit naturally aspirated, nitrous, and forced induction builds, as well as those with 24 and 58-tooth cranks.

These ATK High Performance Chevy LS 408 short blocks include the following:

* GM LS Iron blocks
* Aligned and hone main bores
* Manley 4340 forged crankshaft
*
These ATK High Performance Chevy LS 408 short blocks are made to handle some serious power. The foundation of any high performance engine is a rock-solid short block, so ATK designed and developed these to be just that. They feature a fully forged, balanced, and blueprinted rotating assembly that is available in a variety of configurations to fit naturally aspirated, nitrous, and forced induction builds, as well as those with 24 and 58-tooth cranks.

These ATK High Performance Chevy LS 408 short blocks include the following:

* GM LS Iron blocks
* Aligned and hone main bores
* Manley 4340 forged crankshaft
* 4.00 in. stroke
* Manley 4340 H-beam connecting rods
* Manley forged pistons

Results 1 - 2 of 2

ATK High Performance Chevy LS 408 Short Block

Part Number: HPE-SP38

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Short Block, Chevrolet LS Gen IV 408 Stroker, Internally Balanced, 24 Tooth Reluctor, +4cc Flat Top Pistons, Each

Part Number: HPE-SP39-G4

Not Yet Reviewed

Estimated Ship Date: Jun 17, 2026 if ordered today

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Estimated Ship Date: Jun 17, 2026 if ordered today

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