BluePrint Engines Builder Series 427CI ProSeries Stroker Crate Engine and 4L65/70E Auto Transmission | GM LS3 Style | Dressed Longblock with Fuel Injection | Aluminum Heads | Roller Cam | Deluxe Dressed Longblock w/ Pulleys - Polished
This engine will be dyno tested before it ships to you at no additional charge (others charge $500)!
Part #: BLS427K4L7
LS3 427 Stroker Engine with 4L65/70E Auto Trans
Description
- HP & Torque: 625 HP / 565 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:
- ECM supplied with calibration
Not capable of transmission control
Transmission controller required
Also Includes:
- 87mm LT5 DBW Throttle Body
- LS3 intake manifold
42# injectors and returnless fuel rail
Harmonic balancer
Valve covers, retro fit oil pan and timing cover
Coil Packs
All sensors required for engine to run
Spark plug wires & wiring harness
Gas pedal
Dyno tested & shipped with results
Complete Polished Front Accessory Drive
Alternator, A/C, P/S, All belts and pulleys.
ASSEMBLED W/ COMPLETE PERFORMANCE BUILT 4L65/70E FOUR SPEED AUTO TRANS PACKAGE:
4L65/70E Complete Package
Electronic transmission controller included
2200-2400 Stall Torque converter
Flexplate
Starter
Warranty:
- 30 month / 50,000 mile
Notes:
- Retro fit oil pan will fit most 1955-1995 GM front engine, RWD, V8 cars
Not for use in pollution controlled vehicles or in dry sump applications.
The Included LS controller package is for engine control only. Does not contain any transmission or body control. The ECU comes with calibration that is optimal for our engine, however please note that vehicle parameters such as gearing, tire size, vehicle weight, air intake, headers, etc. may necessitate additional tuning once installed into your specific vehicle. The included ECU is unlocked for further refinement at your local dyno shop if required.
BluePrint Engines Recommends Air Intake Kit BPPLS01013 to ensure correct MAF calculations and Dyno calibration are maintained with the provided ECU / tuning.
- Engine/Trans Package Ships assembled
This engine will be dyno tested before it ships to you at no additional charge (others charge $500)!
Part #: BLS427K4L7
LS3 427 Stroker Engine with 4L65/70E Auto Trans
Description
- HP & Torque: 625 HP / 565 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:
- ECM supplied with calibration
Not capable of transmission control
Transmission controller required
Also Includes:
- 87mm LT5 DBW Throttle Body
- LS3 intake manifold
42# injectors and returnless fuel rail
Harmonic balancer
Valve covers, retro fit oil pan and timing cover
Coil Packs
All sensors required for engine to run
Spark plug wires & wiring harness
Gas pedal
Dyno tested & shipped with results
Complete Polished Front Accessory Drive
Alternator, A/C, P/S, All belts and pulleys.
ASSEMBLED W/ COMPLETE PERFORMANCE BUILT 4L65/70E FOUR SPEED AUTO TRANS PACKAGE:
4L65/70E Complete Package
Electronic transmission controller included
2200-2400 Stall Torque converter
Flexplate
Starter
Warranty:
- 30 month / 50,000 mile
Notes:
- Retro fit oil pan will fit most 1955-1995 GM front engine, RWD, V8 cars
Not for use in pollution controlled vehicles or in dry sump applications.
The Included LS controller package is for engine control only. Does not contain any transmission or body control. The ECU comes with calibration that is optimal for our engine, however please note that vehicle parameters such as gearing, tire size, vehicle weight, air intake, headers, etc. may necessitate additional tuning once installed into your specific vehicle. The included ECU is unlocked for further refinement at your local dyno shop if required.
BluePrint Engines Recommends Air Intake Kit BPPLS01013 to ensure correct MAF calculations and Dyno calibration are maintained with the provided ECU / tuning.
- Engine/Trans Package Ships assembled
Customer Reviews
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: BLS427K4L7
Fuel Delivery Type: Electronic 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 Car
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 Universal fit oil pan, drive by wire throttle body and matching throttle pedal. Also includes sensors, coil packs and wiring harness, and a new ECM with our custom tune installe
Click here to download a copy of the Installation Guide that came with your BluePrint engine.