BluePrint Engines Pro Series Engine 427CI 605HP Long Block GM LS-Style W/O Ecu/ Harness

BluePrint Engines:
PSLS42730CT

Highlights

  • 605HP LS Power
  • Forged Rotating Assembly
  • Aluminum LS3 Heads
  • Internally Balanced Front/Rear
$10,799.00
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Product Description

BluePrint Engines Pro Series 427CI 605HP Long Block GM LS-Style Engine without ECU or Harness.

Experience unmatched LS power with this long block engine (PSLS42730CT). It offers the perfect balance of durability, performance, and precision. Producing 605 horsepower and 565 lb-ft of torque, this engine serves as the foundation for any serious high-performance or restomod build. The engine is ideal for builders and tuners and comes ready for your choice of ECU and harness setup, offering flexibility for custom fuel and ignition management.

Features and Benefits:
- 605 horsepower and 565 lb-ft torque output
- 11:1 compression ratio for maximum performance
- Hydraulic roller cam with .624/.624 lift and 239/255 duration
- 4.125” stroke and 6.125” rods for balanced power
- Improved water jacket design and extended cylinder skirt
- Internally balanced front and rear
- Ready for custom ECU and harness setup
- Compatible with most LS swap applications
- Ideal for Pro Touring, muscle car, and truck swaps

Specifications:
- 4.0685" bore and 6-bolt main
- 69cc chamber
- 2.165" intake and 1.590" exhaust valves
- 259cc intake and 102cc exhaust runners
- .050-114-degree lobe separation

Kit Includes:
- BluePrint high-strength LSX-style cast iron block
- BluePrint Engines LS3 aluminum cylinder heads, fuel injectors, and rail
- Forged crankshaft, pistons, and connecting rods
- LS swap oil pan, windage tray, and pick up screen
- Factory LS3 front and rear covers
- DBW throttle body (P/N: BPP12191019)
- Water pump (P/N: BPPLS126WP)
- GM plastic intake manifold
- Spark plugs, wires, harmonic balancer, coil packs, and sensors

Vehicle Fitment:
- 1965-2010 Mustangs
- 1960-1998 Chevy C10/C20/C30s and 1500/2500/3500s
- 1948-1979 F-100s
- 1966-1977 Broncos

Tech Tips:
- Recommended fuel: 91 Octane.
- BluePrint Engines recommends a 2200+ RPM stall converter.
- Retro fit oil pan will fit most 1955-1995 GM front engines, RWD, and V8 cars.
- Not for use in pollution-controlled vehicles or in dry sump applications.
- This engine requires a non-weighted flex plate/flywheel.

Please Note: Does NOT come with a fuel injection ECU or wiring harness.

California Residents: Proposition 65 Warning

Related Categories: Mustang Engine, Bronco Engine, Restomod Engine, F-100 Engine, F-100 Restomod Engine

Only for use on pre-pollution controlled vehicles: This product can be used on vehicles that were manufactured before emissions control regulations were imposed. Pre-pollution vehicles are defined as:

  • 1965 and older U.S. manufactured California certified vehicles
  • 1967 and older U.S. manufactured federally certified vehicles
Installation & Fitment

Vehicle Fitment

This product will fit the following Bronco years:

This product will fit the following C/K years:

  • 1988,
  • 1989,
  • 1990,
  • 1991,
  • 1992,
  • 1993,
  • 1994,
  • 1995,
  • 1996,
  • 1997,
  • 1998,

This product will fit the following C10 years:

This product will fit the following F-100 years:

  • 1948,
  • 1949,
  • 1950,
  • 1951,
  • 1952,
  • 1953,
  • 1954,
  • 1955,
  • 1956,
  • 1957,
  • 1958,
  • 1959,
  • 1960,
  • 1961,
  • 1962,
  • 1963,
  • 1964,
  • 1965,
  • 1966,
  • 1967,
  • 1968,
  • 1969,
  • 1970,
  • 1971,
  • 1972,
  • 1973,
  • 1974,
  • 1975,
  • 1976,
  • 1977,
  • 1978,
  • 1979,

This product will fit the following Mustang years:

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