Blueprint Engines PSLS42730CT GM LS 427 ci. (7.0L) ProSeries Long Block [605 HP]:

• Block:
  • NEW BluePrint High-Strength Cast Iron 6.2L Block
  • Increased Deck Thickness and Strength Webbing
  • Extended Cylinder Skirt
  • Priority Main Oiling
  • 6-Bolt Main
  • 4.0685 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
  • Forged Pistons
  • Internally Balanced Front and Rear
• Cylinder Heads:
  • BluePrint Aluminum Cylinder Heads PS8015
  • Compression Ratio: 11:1
  • 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 Seperation (LSA) 114
• Ignition Timing:
  • Controlled by Customer Provided ECU
• Also Includes:
  • Oil Pan
  • Valve Covers
  • Timing Cover
  • Harmonic Balancer

Blueprint Engines PSLS42730CT GM LS 427 ci. (7.0L) ProSeries Long Block [605 HP] Notes:

• Engine is not shipped with Engine controller kit. Must purchase separately for your application
• This engine requires a non-weighted flex plate/flywheel
• Recommended Fuel: 91 Octane
• 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 dry sump applications

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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