BluePrint Engines 427CI ProSeries Stroker Crate Engine | GM LS Style | Longblock | Aluminum Heads | Roller Cam | Late Model Drop In Upgrade
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
WARNING: Cancer and Reproductive Harm-
www.P65Warnings.ca.gov
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
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.
