GM LS Compatible 427 c.i. Engine and T56 Manual Transmission - 605 Horsepower - Standard Edition Builder Series - Natural Pulley Kit - Holley Terminator X EFI System

GM LS Compatible 427 c.i. Engine and T56 Manual Transmission - 605 Horsepower - Standard Edition Builder Series - Natural Pulley Kit - Holley Terminator X EFI System

SKU: BLS4273KT56

GM LS Compatible 427 c.i. Engine and T56 Manual Transmission - 605 Horsepower - Standard Edition Builder Series - Natural Pulley Kit - Holley Terminator X EFI System

SKU: BLS4273KT56

Horsepower & Torque: 605 Horsepower / 565 ft. lbs. Torque

Cylinder Heads: BluePrint Engines Aluminum Cylinder Heads

Compression Ratio: 11:1

Camshaft: Hydraulic Roller Cam - .624 Intake / .624 Exhaust Lift and 239 Intake / 255 Exhaust Duration @ .050 – 114 LSA

Pistons: Forged

Crankshaft: Forged Crank – 4.125" Stroke and Forged 6.125" Rods

Fuel Injection: Holley Terminator X Max - Gen IV Complete ECU/Harness EFI System

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*This engine is pictured with an Aluminum Block will come with a Cast Iron Block and Holley Front Drive Pulley Kit.

Description:

  • Horsepower & Torque: 605 Horsepower / 565 ft. lbs. Torque
  • Compression Ratio: 11:1
  • BluePrint Engines LS3 Aluminum Heads
  • BluePrint Engines Hydraulic Roller Cam
  • BluePrint Engines Forged Crank
  • BluePrint Engines 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 - 1.600" 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

Ignition Timing:

  • ECM Supplied with Calibration

Also Includes:

  • Front Accessory Drive with LT1 Style 150-amp Alternator, LT1 Style Water Pump, Type II Power Steering Pump with Baffled Edges, and Compact Style A/C Compressor
  • 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
  • Throttle Pedal, and Sensors
  • GM Plastic Intake Manifold
  • Spark Plugs & Wires
  • Harmonic Balancer
  • Coil Packs 

Assembled with Complete T56 Six Speed Transmission Package:

Includes the following:

  • 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
 

Your BluePrint engine was dyno tested with the parts and specifications listed below. If you prefer to install a different part, your engine may not produce the horsepower recorded on your dyno sheet.

Part Number: BLS4273KT56

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

Notes: 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 installe

Header Partners: 
Click here for our Header Partners and recommendations.

Click here to download a copy of the Installation Guide that came with your BluePrint engine.

BETTER THAN THE REST.

The satisfaction of our customers is our highest priority at BluePrint Engines. We use quality components to balance your engine's rotating assembly within two grams of spec. We dyno test your crate engine and certify that it's ready to deliver horsepower and torque.

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

For a detailed overview of our warranty, click here.

IT ALL COMES DOWN TO RESULTS.

We make sure we hit our target horsepower and proper torque with every crate engine. We use an advanced computerized balancer to get our rotating assemblies within two grams, ensuring silky smooth power over the entire RPM range. That's precisely why our engines sound and run better than our competitors.

BRAGGING RIGHTS INCLUDED!

A comprehensive, dyno-generated printout showing these critical specs will accompany your delivered engine. No more guessing or wondering what your installed engine's real-world peak horsepower and torque ratings actually are. Any doubters in the crowd? Simply flash 'em your dyno results!

This engine will be dyno tested before it ships to you at no additional charge (others charge $500)!

RECOMMENDED PRODUCTS:
BluePrint Engines Crate Engine Break-In Oil — 1 Quart
BluePrint Engines 10w30 Engine Oil - 1 Quart
TrueBlue Performance Octane Boost
BluePrint Engines TrueBlue Performance Octane Booster
Gen IV LS and 2009+ Gen III Hemi Compatible Oil Filter
EFI Billet Aluminum Fuel Pressure Bypass Regulator - 40-75 PSI and -10AN ORB - Black
Liquid Filled Fuel Pressure Gauge - 0-100 PSI
Muscle car swap LS and Hemi Universal Air Intake Kit
EFI Fuel Pump and Plumbing Kit BPP5267 - For Fuel injected engines
Holley EFI In-Tank Retrofit Fuel Pump - 450 LPH - Return Style
GM LS Compatible Water Neck – 45°. For 2.25 DIA LS thermostats with 2.45 overall height
BluePrint Parts – GM LS2 Compatible Water Neck – Straight. For 2.25 DIA LS thermostats with 2.45 overall height