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

SPECIFICATION

REVIEWS

RECOMMENDATIONS

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.