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ATK SP68 LS3 415CI Stroker Short Block 18cc Dish Pistons 24 Tooth

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#35020064

ATK SP68 LS3 415CI Stroker Short Block 18cc Dish Pistons 24 Tooth

415ci LS3 stroker short block with 18cc dished pistons
24-tooth reluctor wheel for older Gen 3 setups
Forged internals for high-performance endurance

Type:

18cc Dish

$6,999.00

/each

Factory Shipped

Quantity

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Product Summary

Short Block Crate Engine Type, No Value Engine Balance

415ci LS3 stroker short block with 18cc dished pistons
24-tooth reluctor wheel for older Gen 3 setups
Forged internals for high-performance endurance
Built for street, track, or power-adder applications
Great foundation for big cubic inch LS builds

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Key Specs

Crate Engine Type	Short Block
Engine Displacement	415 cu. in.
Camshaft Type	Hydraulic Roller
Piston Material	Forged Aluminum
Crankshaft Material	Forged Steel

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Need To Know

Made to Order

This custom item will ship when completed

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ATK Engines SP68 Details

Engine Specifications:

Block: New GM L92/LS3 Aluminum

Year Range: 2007-2013

Bore/Stroke: 4.065” x 4.000”

Displacement (cu.in): 415

Crankshaft: Manley 4340 forged 24 tooth reluctor wheel

Rods: Manley 4340 forged H beam 6.125” ARP 8740 bolts

Pistons: Manley 2618 forged -18cc dished moly skirt coated

Rings: Plasmamoly

Compression Ratios: 64cc = 10.2:1 / 68cc = 9.8:1 / 72cc = 9.5:1 (can vary due to deck height/gasket thickness)

Camshaft Bearings: Installed and Clocked to OEM Position

Freeze Plugs: Installed and Sealed

Oil Galley Plugs: Installed and Sealed

Recommended Components:

Balancer- Internal balance

Flex plate/ Flywheel- Internal balance

Head Gasket: .051” or per application

Oil Pump: Melling #10296 with high pressure spring

Engine Info:

Oil: 10W40 Non synthetic for first 3000 miles

Oil Filter: Wix or K and N per application

Notes:

DOD holes are NOT plugged. If your application does not require DOD/AFM you must plug the oil fill holes. Failure to do so will cause an internal oil leak causing low oil pressure problems.

Guides & Documents

Warranty (ATK Engines)

Technical Information (ATK Engines)

CARB Warning

Follow EPA, CARB, and state regulations for engine changes

Emissions warning: this part is for vehicle engine changes, not direct oem engine replacements. In California, engine changes are legal when done in compliance with California bureau of automotive repairs (bar) engine change policy. For assistance, call bar referee at: (800) 622-7733. And see https://bar.Ca.Gov/consumer/smog_check_program/engine_changes. All customers must comply with federal epa mobile source enforcement memorandum no. 1a (and addendum) and all applicable state regulations when conducting engine changes. Improper installation and/or use of this part in California may subject the installer and/or owner to a $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and laws of all states for use of this engine change part on makes or models of vehicles that render them noncompliant with applicable state and/or federal emission laws with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

ATK Engines SP68 Specifications

KEY SPECS
MFG. Part #	SP68
Brand	ATK Engines
Crate Engine Type	Short Block
Engine Displacement	415 cu. in.
Camshaft Type	Hydraulic Roller
Piston Material	Forged Aluminum
Crankshaft Material	Forged Steel
Carburetor Included	No
Intake Manifold Included	No
Distributor Included	No
Connecting Rod Material	Forged 4340 Steel
Valve Covers Included	No
Cylinder Heads Included	No
Throttle Body Included	No
Timing Cover Included	No
Oil Pan Included	No
Water Pump Included	No
Harmonic Balancer Included	No
Flexplate Included	No
Flywheel Included	No
Air Cleaner Included	No
Spark Plugs Included	No
Spark Plug Wires Included	No
Computer Included	No
Wiring Harness Included	No
Reluctor Wheel	24x

GENERAL
Combustion Chamber Volume	64cc
Bore x Stroke (in)	4.065" x 4.00"
Assembled	Yes
Material Type	Aluminum
Notes	+18cc cylinder head volume. 24-tooth reluctor,
Sold in Quantity	Each
Connecting Rod Beam Style	H-Beam
Piston Style	Dish

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Fitment

2010-2014 Chevy Camaro

GM LS3

2008-2013 Chevy Corvette

GM LS3

2014-2017 Chevy SS

GM LS3

2009 Pontiac G8

GM LS3