Blueprint Engines PSLS42781CTF GM LS 427 ci. (7.0L) ProSeries Base Dressed Engine w/LS3 Cast Aluminum Intake [585 HP]:

• Block:
  • NEW BluePrint High-Strength Cast Iron (LSX Style) Block
  • Increased Deck Thickness and Strength Webbing
  • Extended Cylinder Skirt
  • Priority Main Oiling
  • 6-Bolt Main
  • 4.0695 in. Bore
  • 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
  • 6.125 in. Connecting Rods w/150000 PSI Bolts
  • Forged Pistons
  • Internally Balanced Front and Rear
• Cylinder Heads:
  • BluePrint Aluminum Cylinder Heads PS8015
  • Compression Ratio: 10.7:1
  • 69 cc Chambers
  • 2.165 in. Intake/1.590 in. Exhaust Valves
  • 259 cc Intake/102 cc Exhaust Runners
• Cam Specs:
  • Cam Type: Hydraulic Roller
  • .624 Intake/.624 Exhaust Lift
  • 239 Intake/255 Exhaust Duration @ .050
  • Lobe Separation (LSA) 114
• Holley Terminator X Max Specific Features and Benefits:
• Real Time Fuel Map Learning simplifies tuning by dynamically adjusting the base fuel rate
• On-board Bosch LSU 4.9 wideband control, enabling accurate AFR readings and closed loop tuning
• Eight high impedance injector drivers, ideal for stock LS injectors and Holley EFI injectors
• Integrated 1-Bar MAP sensor for naturally aspirated or nitrous setups, with harness support for external higher bar sensors if needed
• 4 configurable inputs (12V, ground, 5V, frequency) and 2 outputs (ground, PWM), ideal for electric fans, boost control solenoids, nitrous control, and more
• Free PC tuning software via USB/CAN interface for full laptop control and advanced setup
• Integrated 3.5 in. touchscreen handheld with setup wizard, internal data logging, and real-time gauge displays
• Terminator X Max ECU includes a base timing map pre-configured for this engine
• Also Includes:
  • Drive by Wire Throttle Body - BPP12191019
  • LS3 Cast Aluminum Intake Manifold
  • LS Swap Oil Pan - BPP81074
  • Water Pump - BPPLS126WP
  • Injectors and Fuel Rail Kit
  • Spark Plugs & Wiring
  • Harmonic Balancer
  • Timing Cover
  • Valve Covers
  • Coil Packs
  • Gas Pedal

Blueprint Engines PSLS42781CTF GM LS 427 ci. (7.0L) ProSeries Base Dressed Engine w/LS3 Cast Aluminum Intake [585 HP] Notes:

• This engine requires a non-weighted flex plate such as (BPP12654640) or flywheel (BPPLS1611)
• Recommended fuel: 91 octane
• BluePrint Engines recommends a 2200+ RPM stall converter
• Retro fit oil pan fits most 1955–1995 GM front engine, RWD, V8 cars
• Not for use in pollution-controlled vehicles or in dry sump applications
• This Holley EFI-equipped engine has a fully calibrated ECU by BluePrint Engines; do not follow the Holley EFI manual for ECU calibration

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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