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

$9,045.00
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 sends their original ECM to BluePrint for reprogramming)

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.
    Also included is a free retune of your ECM - Contact BluePrint Engines for detail
    Not for use in pollution controlled vehicles.
    Recommended Fuel: 91 Octane
    BluePrint Engines recommends a 2200+ RPM stall converter

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 sends their original ECM to BluePrint for reprogramming)

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.
    Also included is a free retune of your ECM - Contact BluePrint Engines for detail
    Not for use in pollution controlled vehicles.
    Recommended Fuel: 91 Octane
    BluePrint Engines recommends a 2200+ RPM stall converter

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. Also

 

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

Check Out This Product and More On Our Pinterest Page