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ATK SP109 Chevy LM7 5.3L OE Flat Top Pistons Short Block

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#35020249

ATK SP109 Chevy LM7 5.3L OE Flat Top Pistons Short Block

Seasoned 5.3L LM7 Block
1999-2007 Year Range
3.810” x 3.622” Bore/Stroke

$2,444.99

/each

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Product Summary

Seasoned 5.3L LM7 Block
1999-2007 Year Range
3.810” x 3.622” Bore/Stroke
330 cu. in Displacement
OEM GM 24 tooth Reluctor wheel Crankshaft

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Key Specs

MFG. Part #	SP109
Brand	ATK Engines

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Need To Know

Made to Order

This custom item will ship when completed

Truck Shipment

Truck shipments must be pre-paid with a credit card, certified check or money order

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855.313.9176

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ATK Engines SP109 Details

The ATK SP109 Chevy LM7 5.3L short block is a high-quality engine foundation built using a seasoned LM7 block from the 1999-2007 model years, offering 330 cubic inches of displacement with a 3.810" bore and 3.622" stroke. It features an OEM GM 24-tooth reluctor wheel crankshaft, forged powder metal connecting rods, and stock hypereutectic flat-top pistons with two valve reliefs, providing compression ratios of 9.8:1 with 61cc heads, 9.5:1 with 64cc heads, and 9.1:1 with 68cc heads (compression may vary based on deck height and head gasket thickness). The short block is assembled with plasma-moly rings, camshaft bearings installed and clocked to OEM specifications, and sealed freeze and oil galley plugs. It is internally balanced and designed for use with internally balanced balancers, flexplates, and head gaskets for optimal performance.

Seasoned 5.3L LM7 Block
1999-2007 Year Range
3.810” x 3.622” Bore/Stroke
330 cu. in Displacement
OEM GM 24 tooth Reluctor wheel Crankshaft

Application

Designed for 1999-2007 Chevy Applications.

Specs

OEM GM Forged Powder Metal Rods
Stock Hypereutectic flat top with 2 valve reliefs Pistons
61cc = 9.8:1 / 64cc = 9.5:1 / 68cc = 9.1:1 (can vary due to deck height/gasket thickness) Compression Ratios
Plasmamoly Rings
Installed & Clocked to OEM Position Camshaft Bearings
Installed & Sealed Freeze Plugs
Installed & Sealed Oil Galley Plugs
Crankshaft flange is .857” thick

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Warranty (ATK Engines)

Technical Information (ATK Engines)

Warranty Information

Warranty claims must be filed with the manufacturer in accordance to their policies.

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 SP109 Specifications

KEY SPECS
MFG. Part #	SP109
Brand	ATK Engines

GENERAL
Sold in Quantity	Each

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Questions & Answers

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2002-2006 Chevy Suburban 1500

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2007-2009 Chevy Suburban 1500

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2010-2011 Chevy Suburban 1500

GM LC9
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GM LMG
GM LY5

2012-2013 Chevy Suburban 2500

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2000-2006 Chevy Tahoe

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2007 Chevy Tahoe

GM LMG
GM LY5

2008-2011 Chevy Tahoe

GM LC9
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2012-2014 Chevy Tahoe

GM LMG
GM LY5

2002-2005 Chevy Trailblazer

GM LH6

2002-2009 GMC Envoy

GM LM4

2002-2006 GMC Envoy XL

GM LM4

2004-2005 GMC Envoy XUV

GM LM4

2001-2005 GMC Savana 1500

GM LM7

2006 GMC Savana 1500

GM L33
GM LM7

2007-2014 GMC Savana 1500

GM L33

2001-2005 GMC Savana 2500

GM LM7

2006-2013 GMC Savana 2500

GM L33

2002-2005 GMC Savana 3500

GM LM7

2006-2013 GMC Savana 3500

GM L33

1999-2011 GMC Sierra 1500

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2007 GMC Sierra 1500 Classic

GM L33
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1999-2001 GMC Sierra 2500

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2000-2011 GMC Yukon

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2012-2013 GMC Yukon

GM LC9
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2000 GMC Yukon XL 1500

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2001-2011 GMC Yukon XL 1500

GM L59
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2008-2009 Hummer H3

GM LH8

2010 Hummer H3

GM LH9

2009 Hummer H3T

GM LH8

2010 Hummer H3T

GM LH9