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 Holley’s 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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Description
4l80e transmission gear ratios GM LS Compatible 427 c.i. Engine and 4L80E Automatic TransmissionOverview: 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 Holleys 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
Overview:
Description:
- 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 Heads - 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 Compressor
Assembled with Complete HD 4l80e Transmission Package:
Includes the following:
- 4L80E 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. Please DO NOT 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 responsibility to accurately measure and confirm fitment. 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 Kit BPPLS01013 to ensure correct MAF calculations and Dyno calibration are maintained with the provided ECU / tuning.
- Engine/Trans Package Ships assembled
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 4
Cute
Format: Kindle
I enjoyed this story much more than I expected to. Maisie and Drew couldn’t be more different in many ways but they make a good pair. Both women are stubborn and determined and they butt heads more than once but that is ultimately what makes them work. This is a good sapphic story and is worth a read.
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Reviewed in the United States on March 30, 2025
★★★★★ 5
Great story
Format: Kindle
Well developed characters and great story. What happens in Vegas does not stay in Vegas. I will highly recommend this book.
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Reviewed in the United States on March 4, 2026
★★★★★ 5
Everything
Format: Kindle
TB Markinson + Miranda MacLeod = winning combination.
This book was everything I needed. To be fair, having read their previous collaborations, as soon as I saw this book I hit "buy" without even paying much attention to the blurb. I was not disappointed.
When I eventually got around to reading the blurb (post-purchase) I was even more excited to read it. The storyline was great, the story well-written, the characters quite likeable and relatable and all in all a great book. I went through all the feels with this: there were parts that made me laugh, parts where I had to put it down because I really wanted to shake the characters, parts where I went "awww" and couldn't hold back a tear.
So, long story short, read this book, you won't regret it
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Reviewed in the United States on April 2, 2022
★★★★★ 5
Loved this story.
Format: Kindle
First things first. Will there be a sequel, ladies? Perhaps children for Maisie and Drew? Hannah finding a woman to love?
I really loved this story. Horses, critters, angst and some good lovin’. What more could a woman ask for? Well done you two. You made this old broad pine for a ranch and a lovely cowgirl.
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Reviewed in the United States on December 29, 2024
★★★★★ 5
Learning to trust
Format: Kindle
Maisie has gone to Las Vegas for her company to run a booth with her friends. Drew is in the horse racing and is also at Las Vegas. They meet up and become married when they have too much to drink. This is a really great story with Greek characters. Maisie is from the city in Wisconsin and Drew is a rancher from Wyoming. The plot revolves around Drew finding out that she is married to Maisie another fax her ranch. The store is about trust issues and how they work to overcome them and also their personalities. I recommend this book for all romance readers.
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Reviewed in the United States on April 10, 2022