🔥 Twisted Punisher™ 8L90 Performance Transmission – Up to 650 HP

Built for Boost. Built for Torque. Built to Take Abuse.

The Twisted Punisher™ 8L90 steps up from our Pro build for boosted, heavily modified and hard-driven street / strip applications making up to 650 HP.

This build gets more than a clutch upgrade. Punisher adds increased clutch capacity, a 300M billet input shaft, upgraded TransGo hydraulic package and an application-matched billet multi-disc torque converter.

🔥 IDEAL FOR

✔ Supercharged / turbocharged 5.3L & 6.2L builds

✔ Cammed & heavily modified LS / LT engines

✔ High-performance Silverado & Sierra trucks

✔ Camaro & Corvette street / strip builds

✔ Aggressive street use

✔ Properly configured LS / LT swaps up to 650 HP

🔧 TWISTED PUNISHER™ BUILD SPECS

✔ Raybestos GPZ Performance Clutches

Raybestos RGPZ-019 GPZ high-energy friction material is used throughout the transmission.

GPZ friction is built for higher heat, repeated cycling and increased load over a standard replacement clutch.

✔ Increased Clutch Capacity

Punisher steps up from the standard Pro clutch configuration with additional clutch capacity in the critical clutch packs where the correct drum configuration allows it.

C4 capacity is increased from the standard 5-friction configuration to 6 OE-thickness frictions using the proper performance clutch setup.

C3 drum configuration is identified during teardown. Where the correct higher-capacity drum is used, the 5-friction C3 configuration is installed.

Clutch clearance and piston travel are checked and set during assembly.

We don't stack thin steels and cram clutches into a drum just to advertise a bigger clutch count.

✔ 300M Billet Input Shaft

Punisher gets a 300M billet input shaft in the correct compatible application.

The shaft is precision-machined from 300M alloy steel and heat-treated for increased strength under high torque and aggressive loading.

Input-shaft design and spline count are verified before assembly.

✔ TransGo SK 8L90 Shift Kit

TransGo SK 8L90 is standard in every Punisher build.

The kit addresses:

• Pressure regulator & shuttle valve

• TCC regulator valve

• S2 / S3 / S4 regulator valves

• Converter feed limit circuit

• Actuator Feed Limit circuit

• High / low line-pressure problems

• Converter feed & cooler-flow problems

✔ TransGo Oversized Pulse Dampers

Punisher valve bodies are checked for pulse-damper bore wear.

Worn bores are machined for the TransGo 8L90-PDP-OS oversized hardened-steel pulse damper kit using the proper TransGo tooling.

The kit replaces all seven pulse dampers with oversized hardened-steel pistons and calibrated springs when the valve body requires the repair.

✔ Sonnax Valve Body Repairs Where Required

The valve body is inspected for wear beyond the circuits addressed by the TransGo package.

Sonnax 8L90 repair components are used where required for worn clutch-control, signal-accumulator, pressure-regulator, converter-feed and late-design S4 circuits.

Early and late valve-body/S4 designs are identified before machining or installing repair valves.

✔ Application-Specific GM Internal Updates

Builder verifies the correct:

• Clutch pistons & seals

• Wave plates

• Return springs

• C1 / C3 drum configuration

• Pump design

• Input shaft configuration

• Valve-body / S4 design

Later parts are not blindly mixed into earlier units when the hardware or calibration is different.

✔ Pump Inspected & Serviced

Pump, chain, drive and driven components, pump surfaces and sealing components are inspected for wear or damage.

Pump components are serviced or replaced as required and the correct early / late configuration is maintained.

✔ Solenoids Indexed & Checked

S1-S9 are marked and indexed during teardown.

Solenoids stay with their original valve body and bore unless replacement is required.

Solenoids, internal harness and speed sensors are checked and replaced as required.

No mixing a pile of used 8L90 solenoids and throwing nine back in the valve body.

✔ Complete Performance Overhaul

Punisher includes:

• Raybestos RGPZ-019 GPZ clutch package

• Increased C4 clutch capacity

• Higher-capacity C3 configuration where applicable

• New steels

• 300M billet input shaft

• TransGo SK 8L90 shift kit

• TransGo 8L90-PDP-OS pulse-damper repair where required

• Sonnax valve-body repair components where required

• 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

🔥 BILLET MULTI-DISC TORQUE CONVERTER INCLUDED

Every Punisher includes an application-matched billet performance torque converter.

Converter is matched to the engine, vehicle, power level and intended use.

Depending on application and converter configuration:

✔ Billet front cover

✔ Multi-disc lockup

✔ Increased lockup clutch capacity

✔ Performance damper assembly

✔ Application-matched stall speed

Converter configuration must be verified for the specific 8L90 application before the build is sold.

⚙️ PROGRAMMING / TUNING

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

Custom transmission tuning is required on Punisher applications.

Shift timing, torque management and converter lockup strategy must be matched to the engine and vehicle combination.

⚠️ VIN REQUIRED

Customer VIN is the build reference.

Donor-core year is not assumed.

Input shaft, drums, pump, valve body, converter, output configuration and calibration-sensitive components are identified before assembly.

🔥 WHAT YOU'RE ACTUALLY GETTING

STREET – 450 HP

HD friction package • Correct hydraulic issues as required • Stock-stall converter

PRO – 550 HP

Raybestos GPZ • TransGo SK 8L90 • HD performance converter

PUNISHER – 650 HP

GPZ + increased clutch capacity • 300M billet input shaft • TransGo SK 8L90 • Oversized pulse-damper repair as required • Sonnax hydraulic repairs as required • Billet multi-disc converter

📞 833-858-9612

✉️ sales@twistedtorque.com

🌐 www.twistedtorque.com