PSLS4273CTFKB BluePrint Engines GM LS Compatible 427 c.i. ProSeries Engine 605HP 565 ft/lb Deluxe Dressed with Pulley Kit Fuel Injected

Description: 

• Horsepower & Torque: 605 Horsepower / 565 FT LBS
• Compression Ratio: 11:1
• Aluminum Heads
• Hydraulic Roller Cam
• Forged Crank
• Forged Pistons

Block:

• BluePrint Engines High Strength Cast Iron 6.2L Block
• Increased Deck Thickness and Strength Webbing
• Extended Cylinder Skirt
• Priority Main Oiling
• 4.0685" Bore
• 6-Bolt Main
• 1-Piece Rear Main Seal
• Improved Water Jacket Design
• Utilizes OEM LS3 Front and Rear Covers

Rotating Assembly:

• New Forged Crankshaft
• 4.125" Stroke
• Forged 6.125" Connecting Rods
• Forged Pistons
• Internally Balanced Front and Rear

Cylinder Heads:

• BluePrint Aluminum Cylinder Heads -PS8015
• 69cc Chamber
• 2.165" Intake / 1.590" Exhaust Valves
• 259cc Intake / 102cc Exhaust Runners

Cam Specs:

• Hydraulic Roller
• .624 Intake / .624 Exhaust Lift
• 239 Intake / 255 Exhaust Duration
• @.050-114 Degree Lobe Separation

Ignition Timing:

• ECM Supplied with Calibration
• Not Capable of Transmission Control
• Transmission Controller Required

Also Includes:

• Drive by Wire Throttle Body
• GM Plastic Intake Manifold
• 42# Injectors and Returnless Fuel Rail
• Harmonic Balancer
• Valve Covers
• LS swap Oil Pan
• Timing Cover
• Coil Packs
• Spark Plug and Wires
• Wiring Harness
• GM Controller
• Gas Pedal 
• Front Accessory Drive with Water Pump, A/C Compressor, Alternator, and Power Steering Pump

Notes:

• This engine requires a non-weighted flex plate/flywheel.
• Recommended Fuel: 91 Octane
• The front accessory drive on this engine fits many vehicles, however it is the customer responsibility to accurately measure and confirm fitment.  Note this is a low-profile design, but things such as power steering hoses, alternator wiring, and additional fittings/fabrication may be required on some vehicles.
• 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.
• 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.