Blueprint Engines PSLS4273CTF GM LS 427 ci. (7.0L) ProSeries Base Dressed Engine w/GM Plastic Intake Manifold [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:
  • GM Controller
  • Gas Pedal
  • GM Plastic Intake Manifold
  • Drive by Wire Throttle Body
  • 42 lb. Injectors and Returnless Fuel Rail
  • Coil Packs
  • Spark Plugs and Wires
  • Oil Pan
  • Valve Covers
  • Timing Cover
  • Harmonic Balancer

Blueprint Engines PSLS4273CTF GM LS 427 ci. (7.0L) ProSeries Base Dressed Engine w/GM Plastic Intake Manifold [605 HP] Notes:

• 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 our 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
• 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
• BluePrint Engines Recommends Air Intake Kit BPPLS01013 (sold separately) ensure correct MAF calculations and Dyno calibration are maintained

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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