FTI 9.5in 4L80E/4L85E Billet Triple Disc Lock-Up Street Racer Series - LS - 3600 Stall

FTI Performance 9.5" Billet Triple Disc Lock-Up Street Racer Series Torque Converter – LS Engine, 3600 Stall (4L80E/4L85E)

The FTI Performance is a 9.5" billet triple disc lock-up torque converter from the Street Racer Series, built specifically for LS-powered vehicles with 4L80E or 4L85E transmissions. Featuring a CNC-machined billet front cover and billet lock-up piston, this converter virtually eliminates premature clutch wear while delivering strong street and strip performance. With a 3600 stall speed, custom stator design, and multiple blade angle options, it provides excellent launch characteristics and efficient power transfer. The furnace-brazed and heli-welded fins, severe-duty sprague, and anti-ballooning flanged impeller hub make this torque converter extremely durable and capable of handling high-horsepower applications.

Key Features

• Billet Triple Disc Lock-Up – CNC-machined billet front cover and piston for maximum durability and reduced clutch wear
• 3600 Stall Speed – Optimized for LS engines and aggressive street/strip performance
• High-Flow Design – Custom stator and multiple blade angle pumps for excellent torque multiplication
• Severe-Duty Construction – Furnace-brazed fins, heli-welded assembly, severe-duty sprague, and anti-ballooning flanged hub
• 35-Spline Input – Compatible with 4L80E/4L85E transmissions

Whats Included

• FTI SRLS40086-3 Billet Triple Disc Lock-Up Torque Converter
• Mounting hardware

Product Notes

• Custom-built for LS engines with 4L80E/4L85E transmissions
• Triple disc lock-up design greatly reduces clutch wear and improves lock-up performance
• Actual stall speed may vary based on engine combination, gear selection, and vehicle weight
• Professional installation and transmission tuning recommended

Installation Notes

• Requires professional installation and proper transmission setup
• Estimated time: 4–8 hours (depending on transmission removal and reinstallation)
• Compatible with stock or aftermarket flexplates (verify bolt circle)

Why Choose FTI Performance Torque Converters?

• Billet construction and triple disc lock-up for unmatched durability
• Custom-built to your exact stall and driving style
• Proven in street, strip, and high-horsepower applications

Frequently Asked Questions

• Q: What stall speed is this converter?
  A: 3600 stall – ideal for street/strip LS engines with 4L80E/4L85E transmissions.
• Q: Does it include a lock-up clutch?
  A: Yes, it features a billet triple disc lock-up design for strong lock-up performance and reduced wear.
• Q: Will actual stall speed match the rated 3600 RPM?
  A: Actual stall may vary depending on engine combination, gearing, and vehicle weight. FTI can custom-build to your exact needs.

Shipping & Handling

• Method: Ground UPS or FedEx (oversize shipping may apply)
• Availability: In stock – ships same or next business day
• Packaging: Secure FTI Performance retail packaging