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

$275 Shipping

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

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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
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$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 TypeLong Block
Compression Ratio10.3:1
Engine Displacement6 liters
Camshaft TypeHydraulic Roller
Cylinder Head MaterialAluminum
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Need To Know

Made to Order

This custom item will ship when completed

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

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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.

    • 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 Prop 65
    CARB warning

    ATK Engines LQ9-LB-1 Specifications

    KEY SPECS
    MFG. Part #LQ9-LB-1
    BrandATK Engines
    Crate Engine TypeLong Block
    Compression Ratio10.3:1
    Engine Displacement6 liters
    Camshaft TypeHydraulic Roller
    Cylinder Head MaterialAluminum
    Piston MaterialForged Aluminum
    Carburetor IncludedNo
    Intake Manifold IncludedNo
    Distributor IncludedNo
    Valve Covers IncludedYes
    Cylinder Heads IncludedYes
    Throttle Body IncludedNo
    Timing Cover IncludedYes
    Oil Pan IncludedNo
    Water Pump IncludedNo
    Harmonic Balancer IncludedNo
    Flexplate IncludedNo
    Flywheel IncludedNo
    Air Cleaner IncludedNo
    Spark Plugs IncludedNo
    Spark Plug Wires IncludedNo
    Computer IncludedNo
    Wiring Harness IncludedNo
    Reluctor Wheel24x
    GENERAL
    Sold in QuantityEach

    Questions & Answers

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    Fitment

    • GM LM4

    • GM LS6

    • GM LSA

    • GM LM7

    • 6.2 Chevy LS V8

    • GM L94

    • GM LM7

    • 6.2 Chevy LS V8

    • GM L94

    • GM LM7

    • 6.2 Chevy LS V8

    • GM LC9

    • GM LMG

    • GM LY5

    • GM LY5

    • GM LM7

    • 4.8 Chevy LS V8

    • GM LM7

    • GM LS1

    • GM LS3

    • GM LS1

    • GM LS1

    • GM LS6

    • GM LS3

    • GM LS4

    • GM LS4

    • 4.8 Chevy LS V8

    • GM LM7

    • 4.8 Chevy LS V8

    • GM L20

    • GM LM7

    • GM LY2

    • 4.8 Chevy LS V8

    • GM LM7

    • GM LM7

    • GM LS3

    • GM LM4

    • GM LMG

    • GM LY5

    • GM LM7

    • GM L59

    • GM LM7

    • GM LC9

    • GM LMG

    • GM LY5

    • GM LC9

    • GM LMG

    • GM LMG

    • GM LY5

    • GM LMG

    • GM LY5

    • 4.8 Chevy LS V8

    • GM L59

    • GM LM7

    • 4.8 Chevy LS V8

    • GM LMG

    • GM LY5

    • 6.2 Chevy LS V8

    • GM LC9

    • GM LMG

    • GM LC9

    • GM LMG

    • GM LMG

    • GM LY5

    • GM LH6

    • GM LM4

    • GM LM4

    • GM LM4

    • 4.8 Chevy LS V8

    • GM LM7

    • 4.8 Chevy LS V8

    • GM L33

    • GM L94

    • GM LM7

    • 4.8 Chevy LS V8

    • GM L33

    • GM L94

    • 4.8 Chevy LS V8

    • GM LM7

    • 4.8 Chevy LS V8

    • GM L33

    • GM L94

    • 4.8 Chevy LS V8

    • GM LM7

    • 4.8 Chevy LS V8

    • GM L33

    • GM L94

    • GM L20

    • GM LC9

    • GM LMG

    • GM L33

    • GM L59

    • GM LM7

    • GM LM7

    • 4.8 Chevy LS V8

    • GM L20

    • GM LM7

    • GM LY2

    • 4.8 Chevy LS V8

    • GM L20

    • GM L94

    • GM LM7

    • GM LY2

    • GM L94

    • GM LC9

    • GM LMG

    • GM LM7

    • GM L59

    • GM LM7

    • 6.2 Chevy LS V8

    • GM LH8

    • GM LH9

    • GM LH8

    • GM LH9

    • GM LS1

    • GM LS3

    • GM LS1

    Customer Impersonation Script