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Purpose-Built Billet Triple Disc Torque Converter for the C7 Corvette 8L90E Transmission
The FTI FTISRL93082-3C is a 9.5-inch billet triple disc lock-up torque converter designed specifically for the 2015-2019 Chevrolet Corvette equipped with GM's 8L90E 8-speed automatic transmission. The FTISRL93082-3C uses a Corvette-specific fitment profile that differs from the standard 8L90E unit, featuring FTI's forged billet lock-up cover, furnace-brazed fins, and triple Torrington bearings. At 3,000 RPM stall, it delivers noticeably faster launch response than the factory converter while maintaining smooth highway lockup for everyday driving.
Key Features
- 9.5-inch billet triple disc lock-up torque converter for C7 Corvette 8L90E
- 3,000 RPM stall speed optimized for naturally aspirated and mildly modified C7 LT1/LT4
- Corvette-specific fitment (FTISRL93082-3C) separate from standard 8L90E applications
- Forged billet lock-up cover for maximum strength and heat resistance
- Furnace-brazed internal fins for structural rigidity
- TIG-welded construction for added durability
- Triple Torrington bearing assembly for extended service life
- Anti-ballooning flanged hub prevents converter swell at high RPM
- 36-spline input shaft, 1.702-inch crank pilot diameter
- Fully balanced and lockup compatible
- Mounting hardware included
- 3-year warranty from FTI Performance
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2015-2019 | Chevrolet | Corvette C7 | Stingray |
| 2015-2019 | Chevrolet | Corvette C7 | Z06 |
| 2015-2019 | Chevrolet | Corvette C7 | Grand Sport |
| 2015-2019 | Chevrolet | Corvette C7 | ZR1 |
Specifications
| Detail | Value |
|---|---|
| Part Number | FTISRL93082-3C |
| Brand | FTI Performance |
| Diameter | 9.5 inches |
| Stall Speed | 3,000 RPM |
| Disc Type | Triple Disc (Billet Lock-Up) |
| Application | Corvette-specific 8L90E |
| Input Spline | 36-spline |
| Crank Pilot Diameter | 1.702 inches |
| Transmission Compatibility | GM 8L90E (Corvette C7 specific) |
| Lockup | Yes, fully compatible |
| Furnace Brazed | Yes |
| Balanced | Yes |
| Warranty | 3 years |
| UPC | N/A |
What's Included
- 1x FTI FTISRL93082-3C billet triple disc torque converter
- Mounting hardware
About FTI Performance
FTI Performance has been hand-building high-performance torque converters in the United States for decades. Their Street Racer Lock-Up series is purpose-built for enthusiasts who require race-proven performance without sacrificing street usability. Every FTISRL93082-3C is individually balanced and assembled to FTI's exacting standards, backed by a 3-year warranty.
Frequently Asked Questions
Why is the FTISRL93082-3C different from the standard FTI 8L90E torque converter?The Corvette C7 uses a unique 8L90E configuration that requires a Corvette-specific torque converter design. The FTISRL93082-3C is engineered to fit the C7 flexplate and bellhousing dimensions, while the non-Corvette 8L90E units will not correctly fit the Corvette application. Always confirm the -3C suffix when ordering for a C7.
What year Corvettes does the FTISRL93082-3C fit?The FTISRL93082-3C fits the 2015-2019 Chevrolet Corvette C7 equipped with the 8L90E 8-speed automatic transmission, including the Stingray, Grand Sport, Z06, and ZR1 variants with automatic transmission.
Will the FTISRL93082-3C work with the manual transmission Corvette?No. The FTISRL93082-3C is a torque converter and is only compatible with automatic transmission C7 Corvettes. Manual transmission C7s do not use a torque converter.
What stall speed does the FTISRL93082-3C provide?The FTISRL93082-3C is rated at 3,000 RPM stall speed. This is appropriate for naturally aspirated C7 builds and mildly modified LT1 or LT4-powered Corvettes. For more aggressive builds, FTI offers higher-stall options in the SRL9-3C series.
What are the advantages of a triple disc lock-up torque converter over a stock unit?The factory C7 Corvette torque converter is designed primarily for comfort and efficiency. The FTISRL93082-3C's triple disc design increases lock-up clamping force and durability, provides faster and more consistent engagement during performance driving, and handles significantly higher power levels than the stock unit before slipping.
Does the FTISRL93082-3C require any transmission tuning?Most owners running the FTISRL93082-3C will benefit from a transmission tune to optimize the TCC lockup and stall tables for the new converter characteristics. While the car will drive without a tune, a proper tune ensures the 8L90E shifts and locks up in a way that complements the 3,000 RPM stall profile.
Is the FTISRL93082-3C compatible with supercharged LT4-powered Corvette Z06 and ZR1?Yes. The FTISRL93082-3C fits the LT4-powered Z06 and ZR1 as well as the LT1 Stingray and Grand Sport. FTI's billet construction is designed to handle the torque output of factory supercharged LS and LT engines, making it suitable for stock and mildly modified Z06 and ZR1 builds.
How do I verify the correct torque converter for my C7 Corvette before purchasing?Confirm your C7 is equipped with the 8L90E automatic (not the 7-speed manual). You can verify the transmission code using the RPO codes in the glove box. The 8L90E is identified by code M5U. Any 2015-2019 C7 with M5U and an automatic transmission is compatible with the FTISRL93082-3C.
Installation Overview
- Drain transmission fluid, remove the C7 undertray and exhaust components as needed to access the transmission
- Support drivetrain and remove the transmission from the C7 chassis
- Remove the factory torque converter from the 8L90E input shaft
- Install the FTISRL93082-3C onto the 8L90E input shaft, rotating until fully seated (two distinct engagement clicks)
- Reinstall the transmission into the chassis, verify converter-to-flexplate clearance
- Torque flexplate bolts to factory specification, reinstall all removed components
- Refill the 8L90E with fresh Dexron HP or equivalent GM 8-speed fluid
- Perform a light-duty break-in of several gentle launches before full-power use
- Schedule a transmission tune to optimize TCC lockup tables for the new stall profile
WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.
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