BluePrint Engines Builder Series 427CI ProSeries Stroker Crate Engine and 4L70E Auto Transmission | GM LS3 Style | Dressed Longblock with Fuel Injection | Aluminum Heads | Roller Cam | Dressed Longblock with Black Pulley Kit

$19,999.00

This engine will be dyno tested before it ships to you at no additional charge (others charge $500)!
Part #: BLS427KB4L7

LS3 427 Stroker Engine with 4L70E Auto Trans

Description

Dyno Tested Warranty
  • HP & Torque: 625 HP / 565 FT LBS
    Compression Ratio: 11:1
    Aluminum Heads
    Hydraulic Roller Cam
    Forged Crank
    Forged Pistons

Block:

  • OEM Block Machined in the USA!
    6-Bolt Main
    4.060" Bored to 4.069
    1-Piece Rear Main Seal

Rotating Assembly:

  • New Forged Crankshaft
    4.125" stroke
    Forged 6.125" connecting Rods
    Forged Pistons
    Internal

Cylinder Heads:

  • BluePrint Aluminum Cylinder Heads -PS8015
    72cc chamber
    2.165" intake/1.600" exhaust valves
    259cc intake/102cc exhaust runners

Cam Specs:

  • Roller
    .624 intake .624 exhaust lift
    239 intake 255 exhaust duration
    @ .050, 114 degree lobe sep.

Ignition Timing:

  • ECM supplied with calibration
    Not capable of transmission control
    Transmission controller required

Also Includes:

  • 90mm DBW throttle body
    LS3 intake manifold
    42# injectors and returnless fuel rail
    Harmonic balancer
    Valve covers, retro fit oil pan and timing cover
    Coil Packs
    All sensors required for engine to run
    Spark plug wires & wiring harness
    Gas pedal
    Dyno tested & shipped with results

Complete Black Front Accessory Drive 

Alternator, A/C, P/S, All belts and pulleys. 

ASSEMBLED W/ COMPLETE PERFORMANCE BUILT 4L70E AUTO TRANS PACKAGE:

4L70E Complete Package

Electronic transmission controller included

2200-2400 Stall Torque converter

Flexplate
Starter


Warranty:

  • 30 month / 50,000 mile

Notes:

  • Retro fit oil pan will fit most 1955-1995 GM front engine, RWD, V8 cars
    Not for use in pollution controlled vehicles or in dry sump applications.

The Included LS controller package is for engine control only. Does not contain any transmission or body control. The ECU comes with calibration that is optimal for our engine, however please note that vehicle parameters such as gearing, tire size, vehicle weight, air intake, headers, etc. may necessitate additional tuning once installed into your specific vehicle. The included ECU is unlocked for further refinement at your local dyno shop if required.

BluePrint Engines Recommends Air Intake Kit BPPLS01013 to ensure correct MAF calculations and Dyno calibration are maintained with the provided ECU / tuning.

  • Engine/Trans Package Ships assembled
  •  

    Yellow Exclamation Triangle WARNING: Cancer and Reproductive Harm-
    www.P65Warnings.ca.gov

    This engine will be dyno tested before it ships to you at no additional charge (others charge $500)!
    Part #: BLS427KB4L7

    LS3 427 Stroker Engine with 4L70E Auto Trans

    Description

    Dyno Tested Warranty
    • HP & Torque: 625 HP / 565 FT LBS
      Compression Ratio: 11:1
      Aluminum Heads
      Hydraulic Roller Cam
      Forged Crank
      Forged Pistons

    Block:

    • OEM Block Machined in the USA!
      6-Bolt Main
      4.060" Bored to 4.069
      1-Piece Rear Main Seal

    Rotating Assembly:

    • New Forged Crankshaft
      4.125" stroke
      Forged 6.125" connecting Rods
      Forged Pistons
      Internal

    Cylinder Heads:

    • BluePrint Aluminum Cylinder Heads -PS8015
      72cc chamber
      2.165" intake/1.600" exhaust valves
      259cc intake/102cc exhaust runners

    Cam Specs:

    • Roller
      .624 intake .624 exhaust lift
      239 intake 255 exhaust duration
      @ .050, 114 degree lobe sep.

    Ignition Timing:

    • ECM supplied with calibration
      Not capable of transmission control
      Transmission controller required

    Also Includes:

    • 90mm DBW throttle body
      LS3 intake manifold
      42# injectors and returnless fuel rail
      Harmonic balancer
      Valve covers, retro fit oil pan and timing cover
      Coil Packs
      All sensors required for engine to run
      Spark plug wires & wiring harness
      Gas pedal
      Dyno tested & shipped with results

    Complete Black Front Accessory Drive 

    Alternator, A/C, P/S, All belts and pulleys. 

    ASSEMBLED W/ COMPLETE PERFORMANCE BUILT 4L70E AUTO TRANS PACKAGE:

    4L70E Complete Package

    Electronic transmission controller included

    2200-2400 Stall Torque converter

    Flexplate
    Starter


    Warranty:

    • 30 month / 50,000 mile

    Notes:

    • Retro fit oil pan will fit most 1955-1995 GM front engine, RWD, V8 cars
      Not for use in pollution controlled vehicles or in dry sump applications.

    The Included LS controller package is for engine control only. Does not contain any transmission or body control. The ECU comes with calibration that is optimal for our engine, however please note that vehicle parameters such as gearing, tire size, vehicle weight, air intake, headers, etc. may necessitate additional tuning once installed into your specific vehicle. The included ECU is unlocked for further refinement at your local dyno shop if required.

    BluePrint Engines Recommends Air Intake Kit BPPLS01013 to ensure correct MAF calculations and Dyno calibration are maintained with the provided ECU / tuning.

    • Engine/Trans Package Ships assembled
    •  

      Yellow Exclamation Triangle WARNING: Cancer and Reproductive Harm-
      www.P65Warnings.ca.gov

      Customer Reviews

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      Your BluePrint engine was dyno tested with the parts and specifications listed below.  If you prefer to install a different part, your engine may not produce the horsepower recorded on your dyno sheet.

       

      Part Number: BLS427KB4L7

      Fuel Delivery Type: Electronic Fuel Injected

      Spark Plug: AC Delco 41-985

      Spark Plug Gap: .040"

      Harmonic Balancer: Non-Weighted

      Flexplate/Flywheel: Non-Weighted

      Stall Converter: 2200+

      Intake Manifold: LS3 Car

      Fuel Recommendation: 91- 93 Octane

      Timing (Initial/Total Advance): Ignition timing and spark advance are controlled by Powertrain Control Module

      Firing Order: 1,8,7,2,6,5,4,3

      Notes: Recommended break in oil for your BluePrint Crate Engine: BPP710, Not for EGR Universal fit oil pan, drive by wire throttle body and matching throttle pedal. Also includes sensors, coil packs and wiring harness, and a new ECM with our custom tune installe

       

      Click here to download a copy of the Installation Guide that came with your BluePrint engine.

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