🔧 Twisted Pro™ 8L90 Performance Transmission

Rated Up to 550 HP

Built for More Power. Built for Harder Use.

The Twisted Pro™ 8L90 steps up from our Street build for modified engines, tuned trucks and performance street applications making up to 550 HP.

Pro gets a true performance friction package, upgraded hydraulic control and an HD performance converter while keeping the street manners the 8L90 was designed for.

🔥 IDEAL FOR

✔ Cammed 5.3L / 6.2L applications

✔ Tuned Silverado & Sierra trucks

✔ Camaro & Corvette performance builds

✔ Performance daily drivers

✔ Street / Strip applications

✔ Mild boost within rated power level

✔ Properly configured LS / LT swaps up to 550 HP

🔧 TWISTED PRO™ BUILD FEATURES

✔ Raybestos GPZ Performance Clutch Package

Pro steps up to Raybestos GPZ performance friction material for increased heat capacity and clutch holding power under higher load.

Clutch packs are assembled with new steels and checked for proper clearance and critical piston travel.

We don't sacrifice clutch clearance or steel mass just to cram extra frictions into the drum.

✔ Application-Specific 8L90 Updates

Not every 8L90 is the same.

The builder identifies and verifies the correct clutch pistons, seals, wave plates, return springs, C1 drum configuration, pump components, input shaft and valve-body design for the customer's application.

Later-design parts are not blindly mixed into earlier units when the components or calibration are not compatible.

✔ Pump Inspected & Serviced

Pump, chain, drive components and sealing surfaces are inspected for wear or damage and serviced or replaced as required.

Early and late pump components are identified and matched correctly during assembly.

✔ TransGo SK 8L90 Hydraulic Upgrade

STANDARD on every Twisted Pro™ build.

The TransGo hydraulic package addresses critical 8L90 circuits including:

• Pressure regulator / shuttle

• Actuator Feed Limit (AFL)

• S2 / S3 / S4 clutch regulator circuits

• Converter feed

• TCC control

• Line-pressure control

This is one of the major differences between Street and Pro. Street receives hydraulic corrections as required. Pro gets the performance hydraulic package standard.

✔ Signal Accumulator / Pulse Damper Circuits Checked

Signal accumulator and pulse-damper circuits are inspected for bore wear and hydraulic leakage.

Worn circuits are repaired with the correct oversized components as required.

✔ Solenoids & Internal Electrical Components Checked

S1-S9 are identified during teardown and kept with their original valve body and locations.

Solenoids, speed sensors and internal wiring are inspected and replaced as required.

We don't randomly mix characterized solenoids between valve bodies.

✔ Complete Performance Overhaul

Includes:

• Raybestos GPZ performance clutches

• New steels

• New seals & sealing rings

• New gaskets & filter

• Bushings inspected / replaced as required

• Bearings & thrust components inspected / replaced as required

• Drums, shafts & hard parts inspected / replaced as required

• Application-specific internal updates verified

🔥 HD PERFORMANCE TORQUE CONVERTER INCLUDED

Every Twisted Pro™ includes an application-matched HD performance torque converter, upgraded over the stock-style converter included with our Street build.

Built for increased power and load while maintaining street-friendly converter operation.

Billet, multi-disc and custom-stall converters are available as upgrades for more aggressive applications.

⚙️ PROGRAMMING / TUNING

Proper GM programming, solenoid characterization and/or Fast Learn/adaptive procedures must be performed as applicable after installation.

Custom transmission tuning is strongly recommended for modified vehicles, cammed engines, swaps and performance converter applications.

⚠️ VIN REQUIRED

Not every 8L90 is interchangeable.

Case configuration, output, converter, pump, clutch components, input shaft, valve body and calibration-sensitive components can vary by application.

The customer's VIN determines the build configuration, not the donor core.

🚗 COMMON APPLICATIONS

Chevrolet: Silverado, Tahoe, Suburban, Camaro & Corvette

GMC: Sierra, Yukon & Yukon XL

Cadillac: Escalade, CTS-V & select 8L90-equipped applications

⭐ STREET VS. PRO

Twisted Street™ – Up to 450 HP

HD friction package • Hydraulic corrections as required • Stock-stall converter • Stock & mildly modified applications

Twisted Pro™ – Up to 550 HP

Raybestos GPZ performance clutches • TransGo SK 8L90 hydraulic package • HD performance converter • Built for modified engines & harder use

📞 833-858-9612

✉️ sales@twistedtorque.com

🌐 www.twistedtorque.com