BluePrint Engines 427 c.i. GM LS Compatible - Base Dressed - Fuel Injected (PART #BPE-PSLS42750CTF)

The LS-compatible layout has become a favorite for its rock-solid reliability and proven track record, this BluePrint 427 c.i. Pro Series is a street-ready powerhouse built for performance. At its core is a high-strength BluePrint cast iron block with LSX-style features—thicker decks, reinforced webbing, and extended cylinder skirts for added durability.

Blocks:

  • BluePrint Engines High Strength Cast Iron (LSX Style) Block
  • Increased Deck Thickness and Strength Webbing
  • Utilizes OEM LS3 Front and Rear Covers
  • Improved Water Jacket Design
  • 1-Piece Rear Main Seal
  • Priority Main Oiling
  • 4.0695" Bore
  • 6-Bolt Main

Cylinder Heads:

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

Rotating Assembly:

  • Forged 6.125" Connecting Rods
  • Internally Balanced Front and Rear

Included items:

  • This engine Does NOT come with a Fuel Injection ECU and Wiring Harness
  • LS3 Fabricated Intake Manifold & Fuel Rail - BPP822112
  • Drive by Wire Throttle Body - BPP12191019
  • Retro Fit Oil Pan - BPP81074
  • Water Pump - BPPLS126WP
  • Spark Plugs and Wires
  • Harmonic Balancer
  • Timing Cover
  • Valve Covers
  • Coil Packs
  • Injectors

Notes:

  • 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.
  • Does NOT include engine controller. This is a dressed long block only. No Harness/ECU provided. This is for customers wishing to use their own engine controller package.
  • BluePrint Engines Recommends Air Intake Kit BPPLS01013.

SPECIFICATIONS

Horsepower & Torque600 Horsepower / 530 ft. lbs. Torque
Cylinder HeadsBluePrint Engines LS3 Aluminum Cylinder Heads
Compression Ratio11:1
CamshaftHydraulic Roller Cam - .624 Intake / .624 Exhaust Lift and 239 Intake / 255 Exhaust Duration @ .050 - 114° LSA - Three Bolt Cam
PistonsForged - Dish - 22cc
CrankshaftSteel Crank - 4.125" Stroke and 6.125" Rods
Fuel Recommendation91+ Octane
Firing Order1,8,7,2,6,5,4,3
Stall Converter2200+ RPM
Intake ManifoldBluePrint Engines Fabricated Aluminum Intake
Spark PlugCCH9405
Harmonic BalancerNon-Weighted
Flexplate/Flywheel (Not Included)Non Weighted BPP12654640 - BPPLS1611
Recommended Service OilBPP10W30
Recommended Oil FilterBPPB160
Total Oil Capacity with Production Oil Pan, and Correct Filter6 Quarts

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