Overview
Brand: ATK High Performance Engines
Manufacturer’s Part Number: SP71-B
Part Type: Short Block Engines
Product Line: ATK High Performance Chevy LS3 415 Short Blocks
Summit Racing Part Number: HPE-SP71-B
UPC: 00653517725203
Crate Engine Family: Chevy LS
Actual Engine Displacement: 6.8L/415
Rear Main Seal Style: 1-piece
Crankshaft Material: Forged 4340 steel
Piston Material: Forged aluminum
Short Block Piston Style: Dish
Connecting Rod Material: Forged 4340 steel
Connecting Rod Beam Style: I-beam
Engine Block Material: Aluminum
Main Bolt Style: 6-bolt
Main Journal Type: Chevy LS
Deck Height (in.): 9.240 in.
Engine Balance: Internal
Oil Pan Included: No
Timing Cover Included: No
Harmonic Balancer Included: No
Flexplate Included: No
Flywheel Included: No
Assembled: Yes
Remanufactured: No
Quantity: Sold individually.
Notes:
LS3 block with 4.065 in. bore and 4.000 in. stroke, +10cc dished pistons and 58 tooth reluctor. Boost/nitrous ready with Manley forged 6.125 in. connecting rods, upgraded ARP main studs, ARP 2000 rod bolts and Total Seal CS AP ring package with steel top ring. Designed for applications with 10+ psi boost.
ATK High Performance Chevy LS3 415 Short Blocks
ATK High Performance Chevy LS3 415 short blocks are made to handle 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.
ATK High Performance Chevy LS3 415 short blocks include the following:
* GM LS aluminum blocks
* Aligned and hone main bores
* Manley 4340 forged crankshaft
* 4.00 in. stroke
* Manley 4340 H-beam connecting rods
* Manley forged pistons
Applications
Make: CHEVROLET
Beginning Year: 2007
Ending Year: 2013
Engine Type: V8
Engine Size: 6.2L/376
Engine Family: Chevy small block Gen III/IV (LS-based engines)
Make: CHEVROLET
Beginning Year: 2008
Ending Year: 2017
Engine Type: V8
Engine Size: 6.2L/376
Engine Family: Chevy small block Gen III/IV (LS-based engines)
