Product Summary

Long Block Crate Engine Type, 9.1:1 Compression Ratio

  • 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 58 tooth reluctor wheel
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Key Specs

Crate Engine TypeLong Block
Compression Ratio9.1:1
Engine Displacement351 cu. in.
Camshaft TypeHydraulic Roller
Cylinder Head MaterialCast Iron
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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

Quick and Easy Returns

Return Policy

ATK Engines HP09M Details

Engine Specifications:

  • HP: 300
  • TQ: 377
  • Block: Seasoned OE roller block 1987-1995
  • Bore/Stroke: up to 4.060 x 3.500
  • Displacement: 351
  • Crankshaft: OE 1 piece rear main seal 28oz balance
  • Rods: OE
  • Pistons: Hypereutectic 9:1 compression
  • Rings: Moly
  • Camshaft: Hyd. Roller
  • Cam Specs: 220/224 @50 .512in/.512 ex 112LSA
  • Timing Chain: Double roller
  • Cylinder Heads: OE #E7TE cast iron 1.77IN/1.46EX
  • Rocker Arms: Stamped Steel 1.6 ratio
  • Oil Pan: Rear sump truck pan
  • Oil Pump: Melling standard volume
  • Balancer: External balance 28oz
  • Flexplate/Flywheel: Pioneer external 28oz 164 tooth #FRA-205
  • Intake Manifold: Weiand Stealth dual plane #8023
  • Distributor: Pro billet (upgraded melonite gear)
  • Water Pump: Later model LH inlet

    Recommended Components:

  • Carburetor: Quick Fuel 680CFM vacuum secondary’s electric choke #HR-680cfm
  • Fuel Pump: Holley mechanical 110GPH #12-289-11
  • Spark Plugs: Autolite #24
  • Spark Plug Wires: 8mm

    Engine Info:

  • Oil: Conventional / Non Synthetic 10W30
  • Oil Filter: Wix or K and N per application
  • Timing: 34-36 Degrees with vacuum port plugged on carburetor
  • Spark Plug Gap: .035”
  • Firing Order: 13726548
  • Octane: 91+
  • Stall Converter: Stock
  • Exhaust: 1 5/8 Headers

    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

    ATK Engines HP09M Specifications

    KEY SPECS
    MFG. Part #HP09M
    BrandATK Engines
    Crate Engine TypeLong Block
    Compression Ratio9.1:1
    Engine Displacement351 cu. in.
    Camshaft TypeHydraulic Roller
    Cylinder Head MaterialCast Iron
    Piston MaterialHypereutectic Aluminum
    Carburetor IncludedNo
    Intake Manifold IncludedYes
    Distributor IncludedNo
    Valve Covers IncludedYes
    Cylinder Heads IncludedYes
    Throttle Body IncludedNo
    Timing Cover IncludedNo
    Oil Pan IncludedYes
    Water Pump IncludedYes
    Harmonic Balancer IncludedYes
    Flexplate IncludedNo
    Flywheel IncludedNo
    Air Cleaner IncludedNo
    Spark Plugs IncludedNo
    Spark Plug Wires IncludedNo
    Computer IncludedNo
    Wiring Harness IncludedNo
    GENERAL
    Bore x Stroke (in)4.065" x 4.00"
    Material TypeCast Iron
    GTIN Code00653517259463
    NotesEngine has truck style rear sump pan.
    Sold in QuantityEach

    Questions & Answers

    Fitment

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