BluePrint Engines Builder Series LS 427CI 605HP Holley Terminator X EFI Long Block w/ T56 Manual Trans BLS4273T56

Description:

• Horsepower & Torque: 605 Horsepower / 565 FT LBS
• Compression Ratio: 11:1
• Aluminum Heads
• Hydraulic Roller Cam
• Forged Crankshaft
• Forged Pistons

Block:

• 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
• Extended Cylinder Skirt
• 1-Piece Rear Main Seal
• Priority Main Oiling
• 4.0665" Bore
• 6-Bolt Main

Rotating Assembly:

• Forged Crankshaft
• 4.125" Stroke
• Forged 6.125" Connecting Rods
• Forged Pistons
• Internally Balanced Front and Rear

Cylinder Heads:

• BluePrint Aluminum Cylinder Heads - PS8015
• 70cc Chamber
• 2.165" Intake - 1.590" Exhaust Valves
• 259cc Intake - 102cc Exhaust Runners

Cam Specs:

• Hydraulic Roller Cam
• .624 Intake - .624 Exhaust Lift
• 239 Intake - 255 Exhaust Duration
• @.050-114 Degree Lobe Separation

Engine Accessory Specs:

• Fuel Delivery Type: Electronic Fuel Injected
• Spark Plug: CCH9405
• Spark Plug Gap: .040"
• Harmonic Balancer: Non-Weighted
• Flexplate/Flywheel: Non-Weighted
• Stall Converter: 2200+
• Intake Manifold: LS3 Car
• Fuel Recommendation: 91- 93 Octane
• Timing (Initial/Total Advance): Ignition timing and spark advance are controlled by Powertrain Control Module
• Firing Order: 1,8,7,2,6,5,4,3
• Recommended Oil Filter: BPPB160
• Recommended Break in Oil: BPP710
• Recommended Oil: BPP10W30

Also Includes:

• Holley Terminator X Max - Gen IV Complete ECU/Harness EFI System (550-931)
• LS Swap Oil Pan - Windage Tray - Pick Up Screen
• BluePrint Engines Fuel Injectors and Rail
• DBW Throttle Body - BPP12191019
• Water Pump - BPPLS126WP
• Throttle Pedal, and Sensors
• GM Plastic Intake Manifold
• Spark Plugs & Wires
• Harmonic Balancer
• Coil Packs

Assembled with Complete T56 Six Speed Transmission Package:

• McLeod Super Steel Pro Dual Disk Clutch
• Steel Bell Housing
• Billet Flywheel
• Engine Guard
• Starter
  • First Gear Ration: 2.66:1
  • Second Gear Ratio: 1.78:1
  • Third Gear Ration: 1.30:1
  • Fourth Gear Ration: 1.00:1
  • Fifth Gear Ration: 0.80:1
  • Sixth Gear Ration: 0.63:1

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.
• BluePrint Engines Recommends Air Intake Kit BPPLS01013 to ensure correct MAF calculations and Dyno calibration are maintained with the provided ECU / tuning.
• Engine/Trans Package Ships assembled
• Not for EGR Universal fit oil pan, drive by wire throttle body and matching throttle pedal. Also includes sensors, coil packs and wiring harness, and a new ECM with our custom tune installed

BluePrint engine the industry's best-in-class warranty for 30-months / 50,000 miles — with the extra confidence only BluePrint can provide. The warranty applies to individual or professional installations and is fully transferable.

Every BluePrint engine is Dyno tested and has strict parameters to pass and
be shipped to the customer. All parts are tested before being released for production:
• DC and Pneumatic assembly tools calibrated daily
• Fatigue Testing
• Durability Testing
• Random subassembly testing
• Quality system is ISO 9001: 2015 certified
• Traceable engine “DNA” electronic barcode record keeping of
manufacturing and performance data