4L60E / 4L70E GM Performance Transmission (2006–2009, 15-Pin Connector)
Heavy-Duty Street Build • 425 HP Rated
NO Torque Converter Included • 1-Year Warranty (Parts Only)
This 4L60E / 4L70E Performance Transmission from Transmission Depot is a
solid mid-level performance option designed for customers needing improved strength
and durability over stock without stepping into higher-horsepower builds.
Rated for up to 425 horsepower, this transmission is ideal for daily-driven
street vehicles, light towing, and mild performance applications.
This unit is sold without a torque converter and includes a
1-year parts-only warranty, making it a cost-effective performance solution.
All listed transmission components are brand new unless otherwise stated.
INTERNAL PERFORMANCE COMPONENTS
- Twisted™ HD Clutches and Steels – Improved holding power and heat resistance over stock.
- Kevlar Heavy-Duty Intermediate Band – Increased durability and improved 2nd-gear apply.
- Heavy-Duty Sprag Assembly – Improved reliability during load changes.
- Hardened Heavy-Duty Sun Shell – Eliminates a common OEM failure point.
- OEM-Spec Bushing Kit – Restores proper alignment and oil control.
PUMP & VALVE BODY UPGRADES
-
Pump – Modified & Updated the Twisted™ Way
- Updated lubrication and pressure circuits
- 10-vane rotor assembly with hardened rings
- Teflon pump bushing
- All factory reliability updates applied
-
Valve Body – Modified & Updated the Twisted™ Way
- Hydraulic recalibration for smooth, consistent shifts
- Improved shift timing and pressure control
- Reduced cross-leaks and heat buildup
HYDRAULIC & ELECTRONIC COMPONENTS
- 500 Boost Valve – Improves line pressure stability.
- New EPC Solenoid
- New Shift Solenoids
- New Pressure Manifold
SUPPORTING COMPONENTS
- Precision gasket and seal kit
- New transmission filter
- Final assembly inspection and air-check verification
APPLICATION NOTES
- GM vehicles equipped with 4L60E or 4L70E
- 2006–2009 models with 15-pin connector
- Street-driven cars and light trucks
- Light towing and mild performance use
IMPORTANT WARRANTY NOTICE
This transmission includes a 1-Year Warranty (Parts Only).
Adding a torque converter does NOT upgrade this unit to a 3-year warranty.
This listing remains a 1-year, no-converter performance option
regardless of any add-on components.
For extended warranty coverage or higher-horsepower builds,
please see our premium transmission offerings.
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