BluePrint Engines brings modern muscle to the forefront with this 830-horsepower LS 427 Builder Series package paired to the rock-solid 4L80E automatic transmission. Designed for drivers who want brutal power with everyday reliability, this setup features Holleyās Terminator X EFI system for dead-on fuel control, crisp throttle response, and easy tuning. The engine is built with premium internals, meticulous machining, and pro-series durability to handle hard launches, high rpm, and anything else you can throw at it. Finished with a clean natural pulley kit for a purposeful, performance-first look, this 427/4L80E combo is the ultimate turnkey LS solution for serious street or strip builds.
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GM LS Compatible 427 c.i. Engine and 4L80E Automatic Transmission - 830 Horsepower - Standard Edition Builder Series - Natural Pulley Kit - Holley Terminator X EFI System
Overview:
Description:Ā
- Horsepower & Torque: 830 Horsepower / 800 ft. lbs. Torque
- Compression Ratio: 9.5:1
- BluePrint Engines Aluminum Heads
- BluePrint Engines Hydraulic Roller Cam
- BluePrint Engines Forged Crank
- BluePrint Engines Forged Pistons
Block:
- BluePrint Engines High Strength Cast Iron Block
- Increased Deck Thickness and Strength Webbing
- Extended Cylinder Skirt
- Priority Main Oiling
- 6-Bolt Main
- 1-Piece Rear Main Seal
- Improved Water Jacket Design
- Utilizes OEM LS3 Front and Rear Covers
Rotating Assembly:
- New Forged Crankshaft
- 4.125" Stroke
- Forged 6.125" Connecting Rods
- Forged Pistons
- Front and Rear Internally Balanced
Cylinder Heads:
- BluePrint Aluminum Cylinder HeadsĀ - PS8015
- 70cc Chamber
- 2.165" Intake / 1.590" Exhaust Valves
- 259cc Intake / 102cc Exhaust Runners
Cam Specs:
- Hydraulic Roller
- .624 Intake / .624 Exhaust Lift
- 239 Intake / 255 Exhaust Duration
- @.050-114 Degree Lobe Separation
Ignition Timing:
- ECM Supplied with Calibration
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 Advance Setup
- Integrated 3.5" Touchscreen Handheld with Setup Wizard, Internal Data Logging, and Real Time Gauge Displays
- Terminator X Max ECU will Include a Base Timing Map Pre-Configured for this engine.
Also Includes:
- 2.65 Liter Magnuson TVS 2650 Supercharger
- Upgraded Motor tron S107 Injectors
- Electronic Fuel Injection
- Coil Packs
- Valve Covers
- Oil Pan
- Drive by Wire Throttle Body
- Timing Cover
- Spark Plugs and Wires
- Harmonic Balancer
- Natural Front Accessory Drive
- LT1 Style 150-amp Alternator
- LT1 Style Water Pump
- Type II Power Steering Pump
- Compact Style A/C CompressorĀ
Assembled with Complete HD 4l80e Transmission Package:
Ā Ā Ā Includes the following:Ā
- 4L80EĀ Complete Package
- Electronic Transmission Controller Included
- 3200+ Stall Torque Converter
- Flex Plate
- Starter
4L80E Gear Ratios:
- 1: 2.482
- 2: 1.482
- 3: 1.00
- 4: 0.750
- R: 2.077
Notes:
- This Holley EFI Equipped engine has a fully calibrated ECU by BluePrint Engines. PleaseĀ DO NOTĀ follow the Holley EFI manual for the calibration of the ECU.
- 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. -
The front accessory drive on this engine fits many vehicles, however it is the customer responsibilityĀ to accuratelyĀ measure and confirm fitment.Ā Note this is a low-profile design, but things such as power steering hoses, alternator wiring, and additional fittings/fabrication may be required on some vehicles.
- BluePrint Engines Recommends Air Intake KitĀ BPPLS01013Ā to ensure correctĀ MAF calculations and Dyno calibrationĀ are maintained with the provided ECU / tuning.
- Engine/Trans Package Ships assembled
Ā 
Product Information
Product Information
Shipping & Returns
Shipping & Returns
GM LS Compatible 427 c.i. Engine and 4L80E Automatic Transmission - 830 Horsepower - Standard Edition Builder Series - Natural Pulley Kit - Holley Terminator X EFI System
GM LS Compatible 427 c.i. Engine and 4L80E Automatic Transmission - 830 Horsepower - Standard Edition Builder Series - Natural Pulley Kit - Holley Terminator X EFI System
Overview:
BluePrint Engines brings modern muscle to the forefront with this 830-horsepower LS 427 Builder Series package paired to the rock-solid 4L80E automatic transmission. Designed for drivers who want brutal power with everyday reliability, this setup features Holleyās Terminator X EFI system for dead-on fuel control, crisp throttle response, and easy tuning. The engine is built with premium internals, meticulous machining, and pro-series durability to handle hard launches, high rpm, and anything else you can throw at it. Finished with a clean natural pulley kit for a purposeful, performance-first look, this 427/4L80E combo is the ultimate turnkey LS solution for serious street or strip builds.
Description:Ā
- Horsepower & Torque: 830 Horsepower / 800 ft. lbs. Torque
- Compression Ratio: 9.5:1
- BluePrint Engines Aluminum Heads
- BluePrint Engines Hydraulic Roller Cam
- BluePrint Engines Forged Crank
- BluePrint Engines Forged Pistons
Block:
- BluePrint Engines High Strength Cast Iron Block
- Increased Deck Thickness and Strength Webbing
- Extended Cylinder Skirt
- Priority Main Oiling
- 6-Bolt Main
- 1-Piece Rear Main Seal
- Improved Water Jacket Design
- Utilizes OEM LS3 Front and Rear Covers
Rotating Assembly:
- New Forged Crankshaft
- 4.125" Stroke
- Forged 6.125" Connecting Rods
- Forged Pistons
- Front and Rear Internally Balanced
Cylinder Heads:
- BluePrint Aluminum Cylinder HeadsĀ - PS8015
- 70cc Chamber
- 2.165" Intake / 1.590" Exhaust Valves
- 259cc Intake / 102cc Exhaust Runners
Cam Specs:
- Hydraulic Roller
- .624 Intake / .624 Exhaust Lift
- 239 Intake / 255 Exhaust Duration
- @.050-114 Degree Lobe Separation
Ignition Timing:
- ECM Supplied with Calibration
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 Advance Setup
- Integrated 3.5" Touchscreen Handheld with Setup Wizard, Internal Data Logging, and Real Time Gauge Displays
- Terminator X Max ECU will Include a Base Timing Map Pre-Configured for this engine.
Also Includes:
- 2.65 Liter Magnuson TVS 2650 Supercharger
- Upgraded Motor tron S107 Injectors
- Electronic Fuel Injection
- Coil Packs
- Valve Covers
- Oil Pan
- Drive by Wire Throttle Body
- Timing Cover
- Spark Plugs and Wires
- Harmonic Balancer
- Natural Front Accessory Drive
- LT1 Style 150-amp Alternator
- LT1 Style Water Pump
- Type II Power Steering Pump
- Compact Style A/C CompressorĀ
Assembled with Complete HD 4l80e Transmission Package:
Ā Ā Ā Includes the following:Ā
- 4L80EĀ Complete Package
- Electronic Transmission Controller Included
- 3200+ Stall Torque Converter
- Flex Plate
- Starter
4L80E Gear Ratios:
- 1: 2.482
- 2: 1.482
- 3: 1.00
- 4: 0.750
- R: 2.077
Notes:
- This Holley EFI Equipped engine has a fully calibrated ECU by BluePrint Engines. PleaseĀ DO NOTĀ follow the Holley EFI manual for the calibration of the ECU.
- 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. -
The front accessory drive on this engine fits many vehicles, however it is the customer responsibilityĀ to accuratelyĀ measure and confirm fitment.Ā Note this is a low-profile design, but things such as power steering hoses, alternator wiring, and additional fittings/fabrication may be required on some vehicles.
- BluePrint Engines Recommends Air Intake KitĀ BPPLS01013Ā to ensure correctĀ MAF calculations and Dyno calibrationĀ are maintained with the provided ECU / tuning.
- Engine/Trans Package Ships assembled
$35,699.00
GM LS Compatible 427 c.i. Engine and 4L80E Automatic Transmission - 830 Horsepower - Standard Edition Builder Series - Natural Pulley Kit - Holley Terminator X EFI Systemā
$35,699.00
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Overview:
BluePrint Engines brings modern muscle to the forefront with this 830-horsepower LS 427 Builder Series package paired to the rock-solid 4L80E automatic transmission. Designed for drivers who want brutal power with everyday reliability, this setup features Holleyās Terminator X EFI system for dead-on fuel control, crisp throttle response, and easy tuning. The engine is built with premium internals, meticulous machining, and pro-series durability to handle hard launches, high rpm, and anything else you can throw at it. Finished with a clean natural pulley kit for a purposeful, performance-first look, this 427/4L80E combo is the ultimate turnkey LS solution for serious street or strip builds.
Description:Ā
- Horsepower & Torque: 830 Horsepower / 800 ft. lbs. Torque
- Compression Ratio: 9.5:1
- BluePrint Engines Aluminum Heads
- BluePrint Engines Hydraulic Roller Cam
- BluePrint Engines Forged Crank
- BluePrint Engines Forged Pistons
Block:
- BluePrint Engines High Strength Cast Iron Block
- Increased Deck Thickness and Strength Webbing
- Extended Cylinder Skirt
- Priority Main Oiling
- 6-Bolt Main
- 1-Piece Rear Main Seal
- Improved Water Jacket Design
- Utilizes OEM LS3 Front and Rear Covers
Rotating Assembly:
- New Forged Crankshaft
- 4.125" Stroke
- Forged 6.125" Connecting Rods
- Forged Pistons
- Front and Rear Internally Balanced
Cylinder Heads:
- BluePrint Aluminum Cylinder HeadsĀ - PS8015
- 70cc Chamber
- 2.165" Intake / 1.590" Exhaust Valves
- 259cc Intake / 102cc Exhaust Runners
Cam Specs:
- Hydraulic Roller
- .624 Intake / .624 Exhaust Lift
- 239 Intake / 255 Exhaust Duration
- @.050-114 Degree Lobe Separation
Ignition Timing:
- ECM Supplied with Calibration
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 Advance Setup
- Integrated 3.5" Touchscreen Handheld with Setup Wizard, Internal Data Logging, and Real Time Gauge Displays
- Terminator X Max ECU will Include a Base Timing Map Pre-Configured for this engine.
Also Includes:
- 2.65 Liter Magnuson TVS 2650 Supercharger
- Upgraded Motor tron S107 Injectors
- Electronic Fuel Injection
- Coil Packs
- Valve Covers
- Oil Pan
- Drive by Wire Throttle Body
- Timing Cover
- Spark Plugs and Wires
- Harmonic Balancer
- Natural Front Accessory Drive
- LT1 Style 150-amp Alternator
- LT1 Style Water Pump
- Type II Power Steering Pump
- Compact Style A/C CompressorĀ
Assembled with Complete HD 4l80e Transmission Package:
Ā Ā Ā Includes the following:Ā
- 4L80EĀ Complete Package
- Electronic Transmission Controller Included
- 3200+ Stall Torque Converter
- Flex Plate
- Starter
4L80E Gear Ratios:
- 1: 2.482
- 2: 1.482
- 3: 1.00
- 4: 0.750
- R: 2.077
Notes:
- This Holley EFI Equipped engine has a fully calibrated ECU by BluePrint Engines. PleaseĀ DO NOTĀ follow the Holley EFI manual for the calibration of the ECU.
- 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. -
The front accessory drive on this engine fits many vehicles, however it is the customer responsibilityĀ to accuratelyĀ measure and confirm fitment.Ā Note this is a low-profile design, but things such as power steering hoses, alternator wiring, and additional fittings/fabrication may be required on some vehicles.
- BluePrint Engines Recommends Air Intake KitĀ BPPLS01013Ā to ensure correctĀ MAF calculations and Dyno calibrationĀ are maintained with the provided ECU / tuning.
- Engine/Trans Package Ships assembled
