4l80 gear ratios BluePrint Engines Standard Edition Builder Series GM LS 427 C.I. 830 HP Crate Engine and 4L80E Automatic Transmission with Holley Terminator X EFI
SKU: 40414575134
4l80 gear ratios

4l80 gear ratios BluePrint Engines Standard Edition Builder Series GM LS 427 C.I. 830 HP Crate Engine and 4L80E Automatic Transmission with Holley Terminator X EFI

Sale price$25.05 Regular price$27.83
Save 10%

Pay in installments of $6.96 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jun 30 - Jul 5

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

4l80 gear ratios BluePrint Engines Standard Edition Builder Series GM LS 427 C.I. 830 HP Crate Engine and 4L80E Automatic Transmission with Holley Terminator X EFIOverview: 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:

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.

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:
    1. 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
    SKU: 40414575134

    Discover Niche Categories That Outsell 4l80 gear ratios

    Top-Converting Item to Boost Your Average Order

    4.4 ★★★★★
    Based on 1755 reviews
    Sort
    Highest Rating
    Newest First
    Oldest First
    Product Reviews
    M
    Verified Purchase
    Mom of 2
    Grantham, US
    ★★★★★ 5
    Fits Saros 10R perfect
    Size: Mop Cloth-4
    These are great! Fit perfect and might even be fluffier than originals.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 28, 2026
    G
    Verified Purchase
    GadgetGuy
    Boise, US
    ★★★★★ 5
    OEM Roborock Cleaning Pads - Do not buy the knock offs.
    Size: Mop Cloth-4
    These are Roborock OEM pads for my 10R. I tried many of the cheap knock offs and they were terrible. These work great. Highly recommend.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 22, 2026
    P
    Verified Purchase
    philipzelinger
    Port Orchard, US
    ★★★★★ 5
    Better than OEM pads.
    Size: Mop Cloth-5
    Better than OEM pads.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on February 14, 2026
    A
    Verified Purchase
    A. Pedersen
    Whiting, US
    ★★★★★ 5
    There’s a definite quality difference between the OEM product and third party knock-offs
    Size: Mop Cloth-4
    It’s worth getting replacement parts for your vacuum from the manufacturer. These pads are high quality. I purchased some third party ones and they fell apart after a week of use. It’s worth the extra money to have something that will last for many months when properly cared for.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on October 16, 2025
    L
    Verified Purchase
    Louis
    West Palm Beach, US
    ★★★★★ 4
    Overpriced but works
    Size: Mop Cloth-4
    Easy replacement, tear off and slap on. Can’t really go wrong. Fit is perfect. Floors started to get feel consistently again. I feel like this product is definitely overpriced for what it is.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 12, 2026

    recommand products