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ATK SP71B LS3 415 Stroker Short Block 10cc Dish Pistons 58 Tooth

$275 Shipping

ATK SP71B LS3 415 Stroker Short Block 10cc Dish Pistons 58 Tooth
ATK Engines

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#35020068

ATK SP71B LS3 415 Stroker Short Block 10cc Dish Pistons 58 Tooth

  • HP: 380 Prop
  • Block: OE roller block 4 bolt main 1pc seal 1996-2000
  • Bore/Stroke: 4.040 x 3.750
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Type:

10cc Dish (Boost/NOS Ready)

10cc Dish18cc Dish29cc Dish

$7,499.00

/each

Factory Shipped


Quantity

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Product Summary

Short Block Crate Engine Type, Internal Engine Balance

  • HP: 380 Prop
  • Block: OE roller block 4 bolt main 1pc seal 1996-2000
  • Bore/Stroke: 4.040 x 3.750
  • Displacement: 383 (Reman Mercruiser 377)
  • Crankshaft: Scat 4340 forged external balance rear of crank/internal balance front of the crank
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Key Specs

Crate Engine TypeShort Block
Engine Displacement6.8 liters
Camshaft TypeHydraulic Roller
Piston MaterialForged Aluminum
Crankshaft MaterialForged 4340 Steel
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Need To Know

Made to Order

This custom item will ship when completed

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ATK Engines SP71-B Details

This short block is built for engines that are going to be running Boost or Nitrous. It has upgraded ARP main studs, ARP 2000 rod bolts and Total Seal CS AP ring package with Steel rings gapped accordingly for engines pushing 10+ PSI. This short block is good for up to 900HP.

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 58 tooth reluctor wheel
  • Rods: Manley 4340 forged H beam 6.125” ARP 2000 bolts
  • Pistons: Manley 2618 forged -10cc dished moly skirt coated
  • Rings: Total Seal CS AP Rings with Steel Top Ring
  • Compression Ratios: 64cc = 11:1 / 68cc = 10.6:1 / 72cc = 10.2:1 (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.

    • Disclaimer: The recommended components listed are ATK’s recommendations of parts to be used, applications vary and your build may need something different. Contact ATK for a recommendation if you’re not certain about a component to use. 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 SP71-B Specifications

    KEY SPECS
    MFG. Part #SP71-B
    BrandATK Engines
    Crate Engine TypeShort Block
    Engine Displacement6.8 liters
    Camshaft TypeHydraulic Roller
    Piston MaterialForged Aluminum
    Crankshaft MaterialForged 4340 Steel
    Carburetor IncludedNo
    Intake Manifold IncludedNo
    Distributor IncludedNo
    Connecting Rod MaterialForged 4340 Steel
    Valve Covers IncludedNo
    Engine BalanceInternal
    Cylinder Heads IncludedNo
    Rear Main Seal Style1-piece
    Throttle Body IncludedNo
    Timing Cover IncludedNo
    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 Wheel58x
    GENERAL
    Combustion Chamber Volume64cc
    Bore x Stroke (in)4.040" x 3.750"
    AssembledYes
    Material TypeAluminum
    GTIN Code00653517725203
    NotesLS3 block with 4.065 in. bore and 4.000 in. stroke, +10cc dished pistons and 58 tooth reluctor. Boost/nitrous ready with Manley forged 6.125 in. connecting rods, upgraded ARP main studs, ARP 2000 rod bolts and Total Seal CS AP ring package with steel top ring. Designed for applications with 10+ psi boost.
    Sold in QuantityEach
    Connecting Rod Beam StyleI-Beam
    Deck Height9.24"
    Main Bolt Style6-bolt
    Piston StyleDish
    Main Journal TypeChevy LS

    Questions & Answers

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    Fitment

    • GM LSA

    • 6.2 Chevy LS V8

    • GM L94

    • 6.2 Chevy LS V8

    • GM L94

    • 6.2 Chevy LS V8

    • GM LS3

    • GM LS3

    • GM LS3

    • 6.2 Chevy LS V8

    • GM L94

    • GM L94

    • GM L94

    • GM L94

    • 6.2 Chevy LS V8

    • GM LS3

    Customer Impersonation Script