🔥 Twisted Executioner™ 6L80E Performance Transmission — 850 HP

Extreme Duty Internals. Triple-Disc Billet Converter. Built the Twisted Torque™ Way.

The Twisted Executioner™ 6L80E is our top-of-the-line performance build for modified GM cars, trucks, SUVs, and LS-powered vehicles making up to 850 engine HP.

Executioner takes everything we've corrected and upgraded in our Street™, Pro™, and Punisher™ transmissions and steps up to a Sonnax Extreme Duty 45-Tooth 300M Billet Shaft & Clutch System, wider performance frictions, increased clutch holding capacity, upgraded pump operation, and additional internal lubrication updates.

Every Executioner is completely torn down and rebuilt in-house with a NEW Pump & Bellhousing Assembly and an HD Billet Triple-Disc Lockup Torque Converter — INCLUDED.

This is our highest-rated 6L80E build, intended for properly matched high-horsepower street and street/strip applications.

Performance Rating: Up to 850 Engine HP

⚡ TEHCM PROGRAMMING — INCLUDED

Every 6L80E includes a programmed TEHCM matched to your application. Factory replacements are programmed using your vehicle's VIN. Engine swaps and aftermarket applications may require a compatible donor VIN or base calibration. If you require a BLANK, unprogrammed TEHCM, just let us know when ordering. Installation Fast Learn or additional vehicle tuning may still be required.

⚙️ TWISTED EXECUTIONER™ 6L80E BUILD SPECIFICATIONS

✔ Complete Teardown, Cleaning & Inspection

Every transmission is stripped down to the bare case.

Clutch drums, shafts, hubs, planetary gearsets, bearings, splines, and internal parts are cleaned and checked for cracks, worn surfaces, damaged splines, and excessive wear before assembly.

✔ NEW Pump & Bellhousing Assembly

Every Twisted Executioner™ receives a NEW Pump & Bellhousing Assembly, not a reused or resurfaced original.

The new pump replaces common factory wear points that contribute to pressure loss, slipping clutches, and poor lubrication.

EXECUTIONER UPGRADE — High-RPM Pump Slide Spring

Builder Spec: Sonnax #104534-HD or verified equivalent in the new pump assembly.

The heavy-duty spring helps keep the pump supplying sufficient fluid during high-RPM operation rather than reducing pump output when the clutches need it most.

Pump setup, pressure-regulator operation, and converter/cooler flow are checked for the selected application.

✔ High-Energy Performance Clutches & NEW Steels

New performance frictions and matched steels are installed throughout the transmission.

Executioner receives the increased-capacity 3-5-Reverse clutch assembly and the Extreme Duty 45-tooth 4-5-6 clutch system for additional friction holding surface under higher torque loads.

✔ Updated 1-2-3-4 Clutch Assembly

The 1-2-3-4 clutch receives new performance frictions, matched steels, and a strengthened apply piston.

The original factory piston is known to crack and cause pressure loss. The updated piston corrects this weakness.

The clutch housing, retaining-ring grooves, wave plate, and related parts are checked for the proper updated arrangement.

Clutch clearance is measured and set during assembly.

✔ High-Capacity 3-5-Reverse Clutch & Drum

INCREASED CLUTCH CAPACITY — Additional Friction & Steel

Builder Spec: Sonnax #104548-01 High-Capacity Apply Ring or approved matching equivalent.

The upgraded apply-ring arrangement allows additional friction capacity over the standard factory clutch pack.

This provides more clutch holding surface for increased torque and higher-load shifts.

The drum is checked for cracked welds, damaged snap-ring grooves, worn splines, and other known failure points. Worn or damaged drums are replaced.

Clutch clearance is measured for the installed high-capacity arrangement.

✔ EXECUTIONER UPGRADE — Extreme Duty 45-Tooth 4-5-6 Clutch Assembly

WIDER PERFORMANCE FRICTIONS • MATCHING STEELS • HIGH-CAPACITY APPLY PARTS

Executioner uses a complete 45-tooth 4-5-6 clutch arrangement in place of the standard 36-tooth system.

Builder Specifications:

• Sonnax #104960-20K — High-Capacity 4-5-6 Apply-Piston Kit
• Sonnax #104120-03A — 45-Tooth G3C Performance Frictions
• Sonnax #104120-01 — Wide 0.078-inch Clutch Steels
• Sonnax #104120-02 — Wide 0.090-inch Clutch Steels
• Matching heavy-duty backing and apply parts

The wider friction plates provide additional holding surface, while the matching apply parts distribute pressure across the clutch pack.

Builder Note: We use the complete 45-tooth arrangement with the matching shaft/hub. We select steel thicknesses and clutch stack-up according to the current Sonnax instructions. We measure final clearance and check clutch application before assembly.

✔ EXECUTIONER UPGRADE — Sonnax Extreme Duty 300M Billet Intermediate Shaft & 4-5-6 Hub

STANDARD BUILD — SONNAX #104680-45 — INCLUDED

The factory 6L80 intermediate shaft and 4-5-6 hub use a welded connection that can crack or break under increased torque.

Executioner replaces this factory assembly with the Sonnax 104680-45 one-piece 300M billet shaft and 45-tooth clutch hub.

The one-piece design eliminates the factory welded joint, strengthens the shaft and hub, and increases oil flow to the 4-5-6 clutches.

Builder Spec: 104680-45 / 45-Tooth Hub / Matching 45-Tooth Frictions, Wide Steels & 104960-20K Apply Kit.

Do not install the Punisher 104680-36 shaft or 36-tooth clutch arrangement in the standard Executioner build.

✔ Updated 2-6 Clutch Assembly

The 2-6 clutch is rebuilt with high-energy performance frictions, new matching steels, and updated apply parts where required.

The clutch piston, seals, and related parts are checked for wear and damage.

Clutch clearance is measured before assembly. Additional-capacity clutch arrangements may be used when required for the application and approved build specifications.

✔ Updated Low/Reverse Clutch & Sprag

The Low/Reverse clutch receives new frictions, steels, and seals.

Early 30-element sprag assemblies are updated to the later 38-element arrangement where applicable.

Sprag races, retaining parts, and related components are checked for wear or damage.

✔ EXECUTIONER UPGRADE — Pump & Valve Body — Modified & Updated the Twisted Torque™ Way

The valve body is completely disassembled, cleaned, inspected, and rebuilt to correct factory pressure-control problems.

Worn valves, pressure-regulator problems, converter clutch controls, and clutch-select valve wear are corrected.

EXECUTIONER CALIBRATION: Pressure control and clutch apply are matched to the Extreme Duty 45-tooth 4-5-6 clutch assembly, high-capacity 3-5-Reverse clutch, engine torque, and triple-disc converter.

The goal is dependable clutch holding pressure during hard acceleration without unnecessary pressure spikes or poor clutch release.

✔ TransGo TCC & Clutch-Select Valve Corrections

Known converter clutch regulator and clutch-select valve problems are corrected using the applicable TransGo updates.

These repairs help control converter lockup, reduce pressure loss, and prevent sticking valves and inconsistent clutch engagement.

The selected valve-body repairs must be compatible with the high-capacity clutch arrangement and final transmission calibration.

✔ Pressure Regulator & Boost Valve Updates

Pressure regulator and boost valve wear points are inspected and corrected.

The final pressure-control setup must provide sufficient clutch holding pressure while maintaining converter feed and transmission lubrication.

✔ EXECUTIONER UPGRADE — Output Planetary Lubrication Updates

Builder Spec: Sonnax #104584-80K Output Planet Saver Kit, where compatible with the selected output assembly.

The factory output planetary can suffer lubrication problems when debris restricts oil flow to the planet gears.

The Sonnax update provides improved lubrication to the planetary gears, bearings, and pins.

The output carrier, gear teeth, pinion pins, and bearings are inspected for cracks, wear, heat damage, and excessive play.

Important: Lubrication updates do not turn the factory output carrier into a reinforced racing carrier. Heavy vehicles and repeated hard-launch applications require separate output-geartrain evaluation.

✔ Complete Bushing Replacement

New replaceable bushings installed throughout the transmission.

Bushing fit, shaft support, and internal running clearances are checked during assembly.

✔ New Gaskets, Seals & Sealing Rings

New internal gaskets, seals, and sealing rings installed throughout the transmission.

Stator support sealing surfaces and clutch-feed sealing areas are checked for wear or pressure loss.

✔ New Transmission Filter

New transmission filter installed with every build.

✔ Internal Hard Parts Inspected & Measured

Input and output shafts, clutch drums, planetary carriers, hubs, sun gears, bearings, splines, and related parts are inspected for cracks, wear, and damage.

Parts that do not meet our build specifications are replaced.

✔ Final Assembly, Clutch Clearance & Air Checks

Clutch packs are measured and clearanced for the installed performance parts.

Each clutch assembly is air-checked for correct application.

Pump operation, shaft endplay, clutch sealing, and related assembly clearances are checked before completion.

✔ Application-Specific Assembly & Setup

Every Executioner is assembled for the correct engine, drivetrain, vehicle weight, transmission configuration, and intended use.

Performance modifications, converter selection, gear ratio, and tire size must be reviewed before the final build is completed.

💥 HD BILLET TRIPLE-DISC LOCKUP PERFORMANCE TORQUE CONVERTER — INCLUDED

Every Twisted Executioner™ includes an HD Billet Triple-Disc Lockup Torque Converter, built for high-horsepower applications.

Unlike a standard single-disc converter, the triple-disc design uses three lockup clutch surfaces to provide additional holding capacity when the converter is commanded to lock.

The billet cover provides increased strength under load, while the converter's internal configuration and stall are selected for the engine combination.

✔ HD Billet Cover

✔ Triple-Disc Lockup Clutch

✔ Performance Stall Matched to Your Engine

✔ Custom Selection Based on Camshaft, Power & Vehicle Weight

✔ INCLUDED With Every Executioner™ Build

⚡ CAMSHAFT SPECS REQUIRED — CONVERTER MATCHING

Converter stall is selected for your application. We do not use one universal stall speed for every Executioner.

Please provide:

• Engine size and estimated horsepower/torque
• Camshaft specifications — duration at .050, lift, lobe separation, and installed centerline if available
• Naturally aspirated, turbocharged, supercharged, or nitrous setup
• Vehicle weight and rear gear ratio
• Tire size
• Street, strip, or mixed driving use
• Preferred stall speed, if known

Don't know your camshaft specs? Contact us before ordering.

Actual stall speed will vary with engine torque, vehicle weight, and converter design.

Final converter lockup operation and tuning must be appropriate for the selected triple-disc configuration.

🔥 BUILT FOR

• High-horsepower 5.3L, 6.0L, and 6.2L GM engines
• Cammed and heavily modified LS combinations
• Select turbocharged, supercharged, and nitrous applications
• High-performance Camaro, G8, Silverado, and Sierra builds
• LS swaps, hot rods, and restomods
• High-powered street cars with occasional dragstrip use
• Customers requiring a complete Extreme Duty 45-tooth 6L80 build

Performance Rating: Up to 850 Engine HP

Horsepower is only part of the equation. Engine torque, vehicle weight, traction, tire size, tuning, launch RPM, heat, and intended use all affect transmission life.

🔥 HEAVY VEHICLES, DRAG RACING & HIGH-LOAD APPLICATIONS

The Twisted Executioner™ is our highest-rated 6L80E build, but 850 HP does not mean unlimited hard launches or unlimited torque capacity.

Heavy trucks, oversized tires, sticky drag tires, transbrake-style launches, excessive converter slip, and repeated full-throttle passes can place loads on the transmission well beyond normal performance street use.

Even with upgraded clutches and a 300M billet shaft, output carriers, planetary gears, converter clutches, and other parts can still be damaged by sudden torque loads or excessive heat.

For repeated drag racing, heavy 4WD vehicles, or extreme torque applications, contact us before ordering. Additional output-geartrain upgrades, cooling, or a different transmission package may be required.

🚗 GM 6L80E VEHICLE APPLICATIONS

The Twisted Executioner™ 6L80E is built for select Chevrolet, GMC, Cadillac, Pontiac, and Hummer vehicles originally equipped with the GM 6L80 / 6L80E six-speed automatic transmission (RPO MYC).

CHEVROLET

• 2009–2021 Silverado 1500 — Select 4.3L, 5.3L, and 6.2L applications
• 2009–2020 Tahoe — Select 5.3L V8 applications
• 2009–2020 Suburban / Suburban 1500 — Select 5.3L V8 applications
• 2009–2013 Avalanche — Select 5.3L applications
• 2010–2015 Camaro SS — 6.2L V8 automatic
• 2014–2017 Chevrolet SS Sedan — 6.2L V8 automatic
• 2011–2017 Caprice PPV — Select V8 automatic applications

GMC

• 2009–2021 Sierra 1500 — Select 4.3L, 5.3L, and 6.2L applications
• 2009–2020 Yukon — Select 5.3L V8 applications
• 2009–2020 Yukon XL 1500 — Select 5.3L V8 applications
• 2007–2014 Yukon Denali — 6.2L V8
• 2007–2014 Yukon XL Denali — 6.2L V8

CADILLAC

• 2007–2014 Escalade — 6.2L V8
• 2007–2014 Escalade ESV — 6.2L V8
• 2007–2013 Escalade EXT — 6.2L V8
• Early 2015 Escalade / ESV — Factory 6L80 (RPO MYC) only

PONTIAC

• 2008–2009 G8 GT — 6.0L V8 automatic
• 2009 G8 GXP — 6.2L V8 automatic

HUMMER

• 2008–2009 Hummer H2 — 6.2L V8
• 2008–2009 Hummer H2 SUT — 6.2L V8

SPECIALTY 6L80 APPLICATIONS

Select Corvette, Cadillac XLR/XLR-V, and Cadillac STS-V vehicles were factory equipped with the 6L80, but these configurations require separate fitment and performance-rating verification.

Contact us before ordering.

ENGINE SWAPS & CUSTOM APPLICATIONS

We also build 6L80E transmissions for select LS swaps, restomods, and custom performance vehicles.

Engine, camshaft, converter, controller, and drivetrain information must be supplied before the build is finalized.

IMPORTANT FITMENT INFORMATION

This listing is for the GM 6L80 / 6L80E (RPO MYC) ONLY. It is NOT a direct replacement for the 6L90E (RPO MYD).

Not every vehicle within the listed year ranges was equipped with a 6L80.

VIN and factory transmission identification are required before ordering.

🔒 PERFORMANCE USE & WARRANTY INFORMATION

Twisted Executioner™ is a high-performance transmission built for approved applications up to 850 engine HP. It is not represented as an indestructible racing transmission.

Damage caused by excessive heat, insufficient cooling, improper tuning, operation beyond the approved build limits, or abusive racing conditions is not considered a manufacturing defect.

Repeated hard launches, wheel hop, severe traction shock, and sustained high-load operation can damage otherwise properly built transmission parts.

A failure following performance use does not, by itself, establish either a manufacturing defect or customer misuse. Warranty claims are evaluated under our written warranty terms, including inspection findings and the circumstances of the failure.

Manufacturer defects remain subject to the applicable written warranty. Racing-related damage and failures caused by operation beyond the agreed application limits are excluded to the extent provided by that warranty.

Proper installation, cooler cleaning, correct fluid level, compatible transmission tuning, and temperature control are required.

🔥 TWISTED EXECUTIONER™ — OUR TOP 6L80E BUILD

Executioner is the highest-rated 6L80E transmission currently offered in our Twisted Torque™ performance lineup.

Extreme Duty 45-Tooth Clutch System. One-Piece 300M Billet Shaft. HD Triple-Disc Converter. 850 HP Rating.

For applications above this rating, dedicated race use, heavy vehicles, or frequent hard launches, contact us before ordering.

Tell us the vehicle. Tell us the motor. Tell us the cam. Tell us how much power you're making and how you're actually going to drive it.

We'll help match the right transmission and converter to your build.

📞 833-858-9612

Twisted Torque™ — Built for the Application. Not the Catalog.