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ATK LQ9-LB-1 Chevy LQ9 365CI/6.0L Base Engine 550HP

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#35020223

ATK LQ9-LB-1 Chevy LQ9 365CI/6.0L Base Engine 550HP

Chevy LQ9 6.0L base engine making 550 HP
Forged internals and aluminum heads for durability
Hydraulic roller cam tailored for street performance

$8,559.00

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Product Summary

Long Block Crate Engine Type, 10.3:1 Compression Ratio

Chevy LQ9 6.0L base engine making 550 HP
Forged internals and aluminum heads for durability
Hydraulic roller cam tailored for street performance
Perfect foundation for LS swaps and custom builds
Dyno-tested and ready for your next high-output project

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Key Specs

Crate Engine Type	Long Block
Compression Ratio	10.3:1
Engine Displacement	6 liters
Camshaft Type	Hydraulic Roller
Cylinder Head Material	Aluminum

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ATK Engines LQ9-LB-1 Details

This is an LQ9 based engine with LS3 Aluminum heads making a very streetable 550HP+. Expect big mid to upper end power, will have a noticeable idle. For optimal Performance you will need headers, chassis dyno tune and 36lb injectors. Your engine may not necessarily come with all components listed, but they are listed as our recommendations of parts to run for optimal performance.

Engine Specifications:

HP: 550

TQ: 490

Block: New GM 6.0L Iron Gen IV

Bore/Stroke: 4.000” x 3.622”

Displacement (cu.in): 364

Crankshaft: OE reground 3.622” internally balanced 24 tooth

Rods: Scat 4340 forged I beam 6.125” with ARP 8740 bolts

Pistons: Manley forged 10.3:1 compression

Rings: Moly

Camshaft: Hyd. Roller

Cam Specs: Custom performance grind

Lifters: GM LS7

Timing Chain: Billet HD .250” roller

Cylinder Heads: GM LS3 aluminum 68.4cc/260cc 2.165”/1.590” valves

Rocker Arms: OE 1.7 ratio

Oil Pump: Melling

Recommended Components:

Flexplate/Flywheel: Stock internally balanced

Balancer: Stock internally balanced/per application

Intake Manifold: Stock/Aftermarket EFI intake or Carbureted setup

Water Pump: Per application

Fuel Pump: Electric per application

Fuel Injectors: 36lb injectors

Spark Plugs: NGK #3186

Spark Plug Wires: Factory

Engine Info:

Oil: Conventional / Non Synthetic 10W30

Oil Filter: Wix or K and N

Timing: Set to factory specifications via PCM module (ECM TUNING REQUIRED).

Spark Plug Gap: .040”

Firing Order: 18726543

Octane: 91+

Stall Converter: 2500+

Exhaust: 1 5/8 + Headers

Notes: This engine can be swapped into a 2001-2007 6.0L application with a Gen III to Gen IV conversion kit or any other factory LS equipped vehicle. It can also be retrofitted for aftermarket EFI/Carb setups. ECM MUST BE TUNED, not doing so can damage the engine. A PCV valve must be ran; please follow the valve cover instructions provided. You must also run an Air-Oil separator system such as the Moroso #85487 to capture the excess crankcase vapors LS engines are known for. If you are not running a MAP Sensor, the MAP timing option in the timing control box must be zeroed out all the way across. Failure to do so will allow the controller to add timing which can lead to detonation. You must also run some sort of a steam line kit that dumps to your water pump, radiator or radiator hose; we recommend a 4 corner setup like the Trick Flow #TFS-306SB601. This allows air pockets/hot spots to escape the heads and can also be used to purge out trapped air when filling the radiator for the first time.

Disclaimer: The parts listed are ATK’s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. It is the customer’s responsibility to verify components will work in their application. Some modifications to the vehicle may be required using these and or other aftermarket parts. . ATK reserves the right to substitute parts used in engines if necessary.

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 LQ9-LB-1 Specifications

KEY SPECS
MFG. Part #	LQ9-LB-1
Brand	ATK Engines
Crate Engine Type	Long Block
Compression Ratio	10.3:1
Engine Displacement	6 liters
Camshaft Type	Hydraulic Roller
Cylinder Head Material	Aluminum
Piston Material	Forged Aluminum
Carburetor Included	No
Intake Manifold Included	No
Distributor Included	No
Valve Covers Included	Yes
Cylinder Heads Included	Yes
Throttle Body Included	No
Timing Cover Included	Yes
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
Sold in Quantity	Each

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Fitment

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2010-2014 Chevy Camaro

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2008-2013 Chevy Corvette

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1999 Chevy Silverado 1500

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2000-2011 Chevy Silverado 1500

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GM L20
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2012-2014 Chevy Silverado 1500

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GM LM7

2000-2004 Chevy Silverado 2500

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2003-2004 Chevy SSR

GM LM4

2014 Chevy Suburban

GM LMG
GM LY5

2000-2001 Chevy Suburban 1500

GM LM7

2002-2006 Chevy Suburban 1500

GM L59
GM LM7

2007-2009 Chevy Suburban 1500

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GM LY5

2010-2011 Chevy Suburban 1500

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GM LMG

2012-2014 Chevy Suburban 1500

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GM LY5

2012-2013 Chevy Suburban 2500

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2000-2006 Chevy Tahoe

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GM LM7

2007 Chevy Tahoe

4.8 Chevy LS V8
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2008 Chevy Tahoe

6.2 Chevy LS V8
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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

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2001-2005 GMC Savana 1500

4.8 Chevy LS V8
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2006 GMC Savana 1500

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GM L33
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2007-2014 GMC Savana 1500

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2001-2005 GMC Savana 2500

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1999-2011 GMC Sierra 1500

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GM LMG

2007 GMC Sierra 1500 Classic

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GM L59
GM LM7

1999-2001 GMC Sierra 2500

GM LM7

2000-2007 GMC Yukon

4.8 Chevy LS V8
GM L20
GM LM7
GM LY2

2008-2011 GMC Yukon

4.8 Chevy LS V8
GM L20
GM L94
GM LM7
GM LY2

2012-2013 GMC Yukon

GM L94
GM LC9
GM LMG

2000 GMC Yukon XL 1500

GM LM7

2001-2011 GMC Yukon XL 1500

GM L59
GM LM7

2008-2009 Hummer H2

6.2 Chevy LS V8

2008-2009 Hummer H3

GM LH8

2010 Hummer H3

GM LH9

2009 Hummer H3T

GM LH8

2010 Hummer H3T

GM LH9

1998-2002 Pontiac Firebird

GM LS1

2009 Pontiac G8

GM LS3

2004 Pontiac GTO

GM LS1