427CI LS Stroker Crate Engine | GM LS Style | Longblock | Aluminum Heads | Roller Cam | Late Model Drop In Upgrade

$8,999.00

Part #: PSLS4271CT

Description

  • HP & Torque: 625 HP / 550 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:

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

Ignition Timing:

  • ECM Controlled (not included - customer must reprogram)

Also Includes:

  • Timing cover
    LS3 Intake manifold

Warranty:

  • 30 month / 50,000 mile

Notes:

  • This engine requires a non-weighted harmonic balancer, and non-weighted flexplate/flywheel.
    This engine is specifically designed to replace your existing LS engine - a direct drop in for Gen 4 applications.
    Built with a 58x Gen 4 style reluctor and sensors.

    Not for use in pollution controlled vehicles.
    Recommended Fuel: 91 Octane
    BluePrint Engines recommends a 2200+ RPM stall converter

  • Because this engine does not ship with an oil pan, we do not dyno test prior to the engine being shipped.

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

Part #: PSLS4271CT

Description

  • HP & Torque: 625 HP / 550 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:

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

Ignition Timing:

  • ECM Controlled (not included - customer must reprogram)

Also Includes:

  • Timing cover
    LS3 Intake manifold

Warranty:

  • 30 month / 50,000 mile

Notes:

  • This engine requires a non-weighted harmonic balancer, and non-weighted flexplate/flywheel.
    This engine is specifically designed to replace your existing LS engine - a direct drop in for Gen 4 applications.
    Built with a 58x Gen 4 style reluctor and sensors.

    Not for use in pollution controlled vehicles.
    Recommended Fuel: 91 Octane
    BluePrint Engines recommends a 2200+ RPM stall converter

  • Because this engine does not ship with an oil pan, we do not dyno test prior to the engine being shipped.

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

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: PSLS4271CT

Fuel Delivery Type: 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

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 This engine is specifically designed to replace your existing LS engine. Built with a 58x Gen 4 style reluctor and sensors, this engine is a drop in for Gen 4 applications.

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

PSLS4271CT Recommended Parts
  • BluePrint Engines 10w30 Engine Oil - 1 Quart

    BPP10W30

    $7.95

  • GM Gen IV LS OIL FILTER

    BPPB160

    $12.95

  • ALUMINUM | GM LS Corvette Spacing | WATER PUMP

    BPPLS126WP

    $148.95

  • GM LS 45 DEG WATER NECK

    BPP893745

    $51.95

  • GM LS STRAIGHT WATER NECK

    BPP8938S

    $51.95

  • LS CHEVY| LS 6-BOLT CRANK | LS SERIES 168T FLYWHEEL

    BPPLS1611

    $299.95

  • STARTER | GM LSX | DELCO STYLE |

    BPP9101BK

    $155.95

  • LS FRONT ACCESSORY DRIVE | FULL SERPENTINE W/ ALT | PS | WP | AC | BRACKETS | BOLTS

    BPPLSFDACPSBK

    $1,899.00

  • LS FRONT ACCESSORY DRIVE | FULL SERPENTINE W/ ALT | PS | WP | BRACKETS | BOLTS

    BPPLSFDPSBK

    $1,849.00

  • LS FRONT ACCESSORY DRIVE | FULL SERPENTINE W/ ALT | AC | WP | BRACKETS | BOLTS

    BPPLSFDacBK

    $1,849.00

  • Keep Calm And Do a Burnout Black T-Shirt

    BPM01KC-SM

    $22.00

  • Black BluePrint Flag T-Shirt

    BPM01FGB-SM

    $22.00

  • BluePrint Engines Stroke It T-shirt

    $24.00

  • LS Firing order T-shirt

    BPM01LS

    $24.00

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