427CI LS 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 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.
| Factory Wet Sump LS3 Install |
| 2009-2015 CAMARO SS w/Manual Trans |
| 2008-2013 Corvette w/ Wet Sump |
| 2015-2017 SS With Manual Trans |
| Install: This engine will install in a similar manner to a factory replacement longblock engine, reusing factory components from your existing LS3. It WILL require Professional Level Dyno Tuning. |
| Utilize your factory Throttle body, injectors, fuel rail, oil pan and pickup, front accessory components, sensors wiring, valve covers, ETC. |
| Does NOT work in Dry Sump Corvettes |
| Recommend a 2200+ Stall converter |
| This is NOT an L99. If your camaro/ss is an automatic. You will have additional Tuning and wiring to eliminate AFM and/or VCT. |
| Factory Wet Sump LS1/LS2 Install |
| 2002-2007 Corvette w/ Wet Sump |
| 1998-2002 Camaro/Firebird |
| 2005-2006 Chevrolet SSR |
| 2005-2006 Pontiac GTO |
| 2006-2009 Chevrolet TrailBlazer SS (With aftermarket intake change only) |
| 2006-2007 Cadillac CTS-V |
| Install: This engine should be considered an expert level, performance upgrade to your exiting LS1 / LS2. You will reuse some existing factory equipment, while upgrading/replacing other items with "LS3" Type. |
| WILL require Professional Level Dyno Tuning, Custom wiring, and install. |
| We recommend you Utilize your factory Throttle body, oil pan and pickup, front accessory components, valve covers, coils. |
| Your install will require PCV Rerouting, Throttle body adapter, wiring considerations, LS3 Injectors/rail, 24x to 58X signal converter box (For LS1 and Early LS2). Probable OEM sensor wire extension. |
| Does NOT work in Dry Sump Corvettes |
| Recommend a 2200+ 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 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.
| Factory Wet Sump LS3 Install |
| 2009-2015 CAMARO SS w/Manual Trans |
| 2008-2013 Corvette w/ Wet Sump |
| 2015-2017 SS With Manual Trans |
| Install: This engine will install in a similar manner to a factory replacement longblock engine, reusing factory components from your existing LS3. It WILL require Professional Level Dyno Tuning. |
| Utilize your factory Throttle body, injectors, fuel rail, oil pan and pickup, front accessory components, sensors wiring, valve covers, ETC. |
| Does NOT work in Dry Sump Corvettes |
| Recommend a 2200+ Stall converter |
| This is NOT an L99. If your camaro/ss is an automatic. You will have additional Tuning and wiring to eliminate AFM and/or VCT. |
| Factory Wet Sump LS1/LS2 Install |
| 2002-2007 Corvette w/ Wet Sump |
| 1998-2002 Camaro/Firebird |
| 2005-2006 Chevrolet SSR |
| 2005-2006 Pontiac GTO |
| 2006-2009 Chevrolet TrailBlazer SS (With aftermarket intake change only) |
| 2006-2007 Cadillac CTS-V |
| Install: This engine should be considered an expert level, performance upgrade to your exiting LS1 / LS2. You will reuse some existing factory equipment, while upgrading/replacing other items with "LS3" Type. |
| WILL require Professional Level Dyno Tuning, Custom wiring, and install. |
| We recommend you Utilize your factory Throttle body, oil pan and pickup, front accessory components, valve covers, coils. |
| Your install will require PCV Rerouting, Throttle body adapter, wiring considerations, LS3 Injectors/rail, 24x to 58X signal converter box (For LS1 and Early LS2). Probable OEM sensor wire extension. |
| Does NOT work in Dry Sump Corvettes |
| Recommend a 2200+ 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.
Click here to download a copy of the Installation Guide that came with your BluePrint engine.
PSLS4271CT Recommended Parts
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
