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Drivetrain› Automatic Transmissions and Components

FTI Performance

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

$1,373.75 $1,099.00 Save $274.75

SKU: F069 SRLS40086

In Stock
In Stock
Ships by Jun 17
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The FTI Performance Street Racer Lock-Up Series Torque Converter (SRLS40086) is a high-performance torque converter for 4L80E and 4L85E automatic transmissions, commonly found in GM trucks and SUVs with LS engines. It features a 9.5-inch diameter with a 3600 RPM stall speed and is compatible with 10.75-inch, 11.063-inch, and 11.5-inch bolt circles.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandFTI Performance
Part NumberF069 SRLS40086

Videos

FTI stall converter install. Texas Speed was WRONG.

FTI stall converter install. Texas Speed was WRONG.
FTI Makes Lockup Torque Converters for Your Big Power Street or Race Car | New for 2024

FTI Makes Lockup Torque Converters for Your Big Power Street or Race Car | New for 2024
Installing FTI Triple Clutch Converter And 4L80E Swap On My 1981 Trans Am

Installing FTI Triple Clutch Converter And 4L80E Swap On My 1981 Trans Am
4L80E Differences between Early and Late models

4L80E Differences between Early and Late models
All 15 Automatic Transmissions (Powerglide to 10L90)

All 15 Automatic Transmissions (Powerglide to 10L90)
TCI Overdrive 4L80E Transmission & Converter Install In Off-Road Chevrolet Truck

TCI Overdrive 4L80E Transmission & Converter Install In Off-Road Chevrolet Truck
Setup & Tuning Walkthrough for GM 4L80E / 4L85E Transmissions (Quick 4 / Quick 2)

Setup & Tuning Walkthrough for GM 4L80E / 4L85E Transmissions (Quick 4 / Quick 2)

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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