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 - Black
LS3 427 Stroker Engine with 4L65/70E Auto Trans
IT ALL COMES DOWN TO RESULTS
We make sure we hit our target horsepower and proper torque with every crate engine. We use an advanced computerized balancer to get our rotating assemblies within two grams, ensuring silky smooth power over the entire RPM range. That's precisely why our engines sound and run better than our competitors.
BRAGGING RIGHTS INCLUDED!
A Comprehensive, dyno-generated printout showing these critical specs will accompany your delivered engine. No more guessing or wondering what your installed engine's real-world peak horsepower and torque ratings actually are. Any doubters in the crowd? Simply flash 'em your dyno results! Recommended Fuel: 91 Octane
The satisfaction of our customers is our highest priority at BluePrint Engines. We use quality components to balance your engine's rotating assembly within two grams of spec. We dyno test your crate engine and certify that it's ready to deliver horsepower and torque. We give your BluePrint engine the industry's best-in-class warranty for 30 months or 50,000 miles — with the extra confidence only BluePrint can provide. Our warranty applies to individual or professional installations, is fully transferable, and covers engines worldwide.
- HP & Torque: 625 HP / 565 FT LBS
Compression Ratio: 11:1
Hydraulic Roller Cam
- OEM Block Machined in the USA!
4.060" Bored to 4.069
1-Piece Rear Main Seal
- New Forged Crankshaft
Forged 6.125" connecting Rods
- BluePrint Aluminum Cylinder Heads -PS8015
2.165" intake/1.600" exhaust valves
259cc intake/102cc exhaust runners
.624 intake .624 exhaust lift
239 intake 255 exhaust duration
@ .050, 114 degree lobe sep.
- ECM supplied with calibration
Not capable of transmission control
Transmission controller required
- 87mm LT5 DBW Throttle Body
- LS3 intake manifold
42# injectors and returnless fuel rail
Valve covers, retro fit oil pan and timing cover
All sensors required for engine to run
Spark plug wires & wiring harness
Dyno tested & shipped with results
Complete Black Front Accessory Drive
Alternator, A/C, P/S, All belts and pulleys.
ASSEMBLED W/ COMPLETE PERFORMANCE BUILT 4L65/70E AUTO TRANS PACKAGE:
4L65/70E Complete Package
Electronic transmission controller included
2200-2400 Stall Torque converter
- 30 month / 50,000 mile
- 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.