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ATK High Performance Chevy LS 408 Short Blocks
ATK High Performance Chevy LS 408 Short Block
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Estimated Ship Date: Jan 26, 2027 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
SP39
Part Type:
Product Line:
Summit Racing Part Number:
HPE-SP39
UPC:
653517291968
Crate Engine Family:
Chevy LS
Actual Engine Displacement:
6.7L/408
Rear Main Seal Style:
1-piece
Crankshaft Material:
Forged 4340 steel
Piston Material:
Forged aluminum
Short Block Piston Style:
Flat top
Connecting Rod Material:
Forged 4340 steel
Connecting Rod Beam Style:
H-beam
Engine Block Material:
Cast iron
Main Bolt Style:
6-bolt
Main Journal Type:
Chevy LS
Engine Balance:
Internal
Oil Pan Included:
No
Timing Cover Included:
No
Harmonic Balancer Included:
No
Flexplate Included:
No
Flywheel Included:
No
Assembled:
No
Remanufactured:
Yes
Quantity:
Sold individually.
Notes:
+4cc cylinder head volume. 24-tooth reluctor.
ATK High Performance Chevy LS 408 Short Blocks
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
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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