🔥 Twisted Street™ 4L60E to 4L80E Conversion Package

💪 Rated for Up to 500 HP

Daily Driver • Towing • Work Trucks • Off-Road • Street Performance

Upgrade your factory 4L60E to the legendary GM 4L80E with a complete conversion package from Twisted Torque.

Built for GM trucks and SUVs, this package combines our Twisted Street™ 4L80E Performance Transmission with the parts commonly needed to simplify your 4L60E to 4L80E conversion.

Whether you're towing, running larger tires, building an LS swap, or simply tired of replacing 4L60Es, this package delivers the strength and reliability of a professionally built 4L80E.

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🔥 PERFECT FOR

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✔ Chevrolet Silverado 1500

✔ GMC Sierra 1500

✔ Chevrolet Tahoe

✔ GMC Yukon

✔ Chevrolet Suburban

✔ Chevrolet Avalanche

✔ Trailblazer SS

✔ LS Engine Swaps

✔ Street Trucks

✔ Tow Vehicles

✔ Off-Road Builds

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⚙️ WHY UPGRADE TO A 4L80E?

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✔ Rated for Up to 500 HP

✔ Stronger Than the Factory 4L60E

✔ Excellent for Towing & Heavy-Duty Use

✔ Better Durability for Larger Tires

✔ New Electronics & Sensors

✔ New Lockup Torque Converter Included

✔ Available for 2WD & 4WD Applications

✔ Built in the USA

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🔧 TWISTED STREET™ 4L80E BUILD

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Every conversion package includes our proven Twisted Street™ 4L80E featuring:

✔ Twisted Torque™ Performance Clutches & Steels

✔ Complete Overhaul with Premium Seals & Gaskets

✔ Complete Bushing Replacement

✔ New Lip Seals

✔ New Metal-Clad Seals

✔ New Teflon Sealing Rings

✔ New Bearings & Thrust Washers

✔ New Filter

✔ New Pump Bushing

✔ New Front Pump Seal

✔ New Extension Housing Seal

✔ Increased Direct Clutch Capacity

✔ Heavy-Duty Intermediate Sprag Upgrade

✔ HD Intermediate Band

✔ Pump Reconditioned & Inspected

✔ Valve Body Reworked In-House

✔ Street-Tuned Hydraulic Calibration

✔ Hard Parts Inspected & Replaced as Needed

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⚡ NEW ELECTRONICS PACKAGE

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✔ New EPC Solenoid

✔ New Shift Solenoid A

✔ New Shift Solenoid B

✔ New Internal Wiring Harness

✔ New MLPS (Manual Lever Position Sensor)

✔ New Input Speed Sensor (where applicable)

✔ New Output Speed Sensor

✔ Updated Pressure Control Parts

Electronics are matched to your specific year and application.

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🚙 NEW LOCKUP TORQUE CONVERTER INCLUDED

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Every package includes a brand-new OEM-style lockup torque converter.

✔ Typical 2,000-2,200 RPM Stall Speed

✔ Smooth Lockup Operation

✔ Excellent for Daily Driving & Towing

✔ Mild Performance Friendly

Performance stall converter upgrades are available.

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🔄 4L60E TO 4L80E CONVERSION PACKAGE INCLUDES

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✔ 4L60E to 4L80E Wiring Adapter Harness

✔ New MLPS (Manual Lever Position Sensor)

✔ New Input & Output Speed Sensors (where applicable)

✔ OEM-Style Dipstick & Tube

✔ Torque Converter Bolts

✔ Twisted Torque™ 1402 External Transmission Cooler

✔ 12 Quarts of Transmission Fluid

✔ Free Twisted Torque™ T-Shirt

✔ Free Technical Support

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⚙️ SELECT YOUR DRIVETRAIN

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2WD Applications (Standard)

Every Twisted Street™ 4L60E to 4L80E Conversion Package is built as a 2WD transmission and includes:

✔ 32-Spline Slip Yoke Installed

4WD APPLICATIONS – CUSTOM UPGRADE REQUIRED

If your vehicle is 4WD, you MUST select the Custom 4WD Output Shaft Conversion option when placing your order.

This custom upgrade includes:

✔ Removal of the Standard 2WD Output Shaft

✔ Installation of a Custom Aftermarket 4WD Output Shaft

✔ 4WD Adapter Housing Installed

Your transmission is then built specifically for your transfer case before it ships.

⚠️ IMPORTANT: The base transmission is configured for 2WD applications. If your vehicle is 4WD and the Custom 4WD Output Shaft Conversion is not selected, your transmission will be built as a 2WD unit.

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🌡️ KEEP IT RUNNING COOL

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Every conversion package includes our Twisted Torque™ 1402 External Transmission Cooler to help maintain lower transmission temperatures during towing, hauling, and everyday driving.

Lower operating temperatures help extend transmission life and improve long-term reliability.

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⚙️ AVAILABLE UPGRADES

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✔ Deep Aluminum Transmission Pan

✔ Performance Stall Converter

✔ Full Synthetic ATF Upgrade

✔ Additional Performance Upgrades Available

1999-2006 GM LS Applications: PCM tuning is required when converting from a 4L60E to a 4L80E. Standalone transmission controllers are available for custom engine swaps and non-PCM-controlled applications.

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🛡️ BUILT THE TWISTED TORQUE™ WAY

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✔ Completely Disassembled

✔ Professionally Cleaned

✔ Thoroughly Inspected

✔ Precision Rebuilt

✔ Air Checked During Assembly

✔ Internal Clearances Verified

✔ End Play Verified

✔ Hydraulic System Checked

✔ Assembled In-House

✔ Inspected Before Shipping

Every Twisted Street™ 4L80E is built specifically for your year, engine, drivetrain, and intended use to ensure the best possible fit, dependable operation, and long service life.

Twisted Street™ 4L60E to 4L80E Conversion Package — Everything You Need. Nothing You Don't.