Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Reference Information

Crate Engine, 427 Stroker, GM LS Compatible Stroker Engine, Deluxe Dressed, Fuel Injected, with Polished Pulley Kit, Chevy, Each

BluePrint Engines Pro Series Chevy 427 c.i.d. 605 hp dressed stroker long block crate engines are factory dyno tested with a complete MPFI system. These GM LS compatible performance engines are capable of producing at least 585 hp and 520 lbs.-ft. of torque. The PSLS4278CTFK comes with LS cast aluminum intake, coil packs with spark plugs and wires, retro fit oil pan, water pump, harmonic balancer, all sensors to run the engine, gas pedal, with a polished front pulley kit.

-- Description:
• Horsepower and torque: 585 hp / 520 lbs.-ft.
• Compression ratio: 11:1
• Aluminum heads
• Hydraulic roller cam
• Forged crank
• Forged pistons

-- Block:
• BluePrint Engines high-strength cast iron (LSX style) block
• Increased deck thickness and strength webbing
• Extended cylinder skirt
• Priority main oiling
• 4.0695 in. 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 in. stroke
• Forged 6.125 in. connecting rods
• Forged pistons
• Internally balanced

-- Cylinder Heads:
• BluePrint aluminum cylinder heads - PS8015
• 69cc chamber
• 2.165 in. Intake / 1.590 in. Exhaust valves
• 259cc Intake /102cc Exhaust runners

-- Cam Specs:
• Hydraulic roller
• .624 Intake / .624 Exhaust lift
• 239 Intake / 255 Exhaust duration
• at .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
• BluePrint Engines cast aluminum intake manifold
• 42 lb. injectors and returnless fuel rail
• Harmonic balancer
• Valve covers
• Retro fit oil pan
• Timing cover
• Coil packs
• Spark plug and wires
• Wiring harness
• Gas pedal
• Front accessory drive with water pump, alternator, power steering pump, and A/C compressor

-- 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 1955-95 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 the 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.