BluePrint Engines GM LS Pro Series 427 Crate Engine Base Dressed 605 HP w/o ECU/ Harness

This Pro Series engine (PSLS42730CTF) features an LSX-style block and LS3 aluminum heads, unleashing new power! You'll get 605 horsepower and 565 ft-lbs. of torque using a hydraulic roller cam with a forged crankshaft and pistons. It's base dressed and comes internally balanced at the front and rear.

Features and Benefits:
- High-strength cast iron LSX-style base-dressed crate engine block
- 605 Horsepower / 565 FT. LBS. Torque
- Compression Ratio: 11:1
- Features 6-bolt main, 4.0685" bore, and 1-piece rear main seal
- Priority main oiling and improved water jacket design
- Increased deck thickness and strength webbing
- Forged crankshaft and pistons with 4.125" rotation stroke
- Forged 6.125" connecting rods
- Internally balanced at the front and rear
- Hydraulic roller cam design
- Utilizes OEM LS3 front and rear covers
- Backed by BluePrint Engines' 30-month/50,000-mile warranty

Cylinder Head Specifications:
- 69cc Chambers
- 2.165" Intake / 1.590" Exhaust Valves
- 259cc Intake / 102cc Exhaust Runners

Camshaft Specifications:
- 0.624" Intake / 0.624" Exhaust Lift
- 239 Intake / 255 Exhaust Duration
- @ 0.050-114 degrees Lobe Separation

Base Dressed Includes:
- LS Swap Oil Pan - windage tray - pickup screen
- Fuel Injectors and Rail
- DBW Throttle Body
- Water Pump
- GM Plastic Intake Manifold
- Spark Plugs and Wires
- Harmonic Balancer
- Coil Packs
- Sensors

Additional Notes:
- Does NOT include any engine management/controller.
- This engine requires a non-weighted flex plate/flywheel.
- Recommended Fuel: 91 Octane
- BluePrint Engines recommends a 2200+ RPM stall converter.
- 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.
- BluePrint Engines Recommends Air Intake Kit BPPLS01013 to ensure correct MAF calculations and Dyno calibration are maintained.