BluePrint Engines 427CI ProSeries Stroker Crate Engine | GM LS Style | Dressed Longblock with Carburetor | Aluminum Heads | Roller Cam

$10,050.00
Part #: PSLS4270CTC

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:

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

Ignition Timing:

  • Ignition box required

Also Includes:

  • Carburetor - 850cfm with mechanical secondaries, dual accelerator pumps and mechanical choke
    Single plane aluminum intake
    Harmonic balancer
    Valve covers, retro fit oil pan and timing cover
    Coil Packs and coil pack harness
    Crank, cam and MAP sensors
    Spark plug wires & wiring harness
    Dyno tested & shipped with results

Warranty:

  • 30 month / 50,000 mile

Notes:

  • This engine requires a non-weighted flexplate/flywheel.
    Recommended Fuel: 91 Octane
    BluePrint Engines recommends a 2200+ RPM stall converter.
    Retro fit oil pan will fit most 1955-1995 GM front engine, RWD, V8 cars
Part #: PSLS4270CTC

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:

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

Ignition Timing:

  • Ignition box required

Also Includes:

  • Carburetor - 850cfm with mechanical secondaries, dual accelerator pumps and mechanical choke
    Single plane aluminum intake
    Harmonic balancer
    Valve covers, retro fit oil pan and timing cover
    Coil Packs and coil pack harness
    Crank, cam and MAP sensors
    Spark plug wires & wiring harness
    Dyno tested & shipped with results

Warranty:

  • 30 month / 50,000 mile

Notes:

  • This engine requires a non-weighted flexplate/flywheel.
    Recommended Fuel: 91 Octane
    BluePrint Engines recommends a 2200+ RPM stall converter.
    Retro fit oil pan will fit most 1955-1995 GM front engine, RWD, V8 cars

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: PSLS4270CTC

Fuel Delivery Type: Carbureted, 850cfm

Spark Plug: AC Delco 41-985

Spark Plug Gap: .040"

Harmonic Balancer: Non-Weighted

Flexplate/Flywheel: Non-Weighted

Stall Converter: 2200+

Intake Manifold: Single plane, satin aluminum

Fuel Recommendation: 91 - 93 Octane

Timing (Initial/Total Advance): Ignition box required - BluePrint Engines recommends MSD 6012 Ignition system

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

Notes: Recommended break in oil for your BluePrint Crate Engine: BPP710, Not for EGR Also includes sensors and coil packs. If requested, BluePrint Engines can provide a base map and timing curve.

 

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

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