🔥 Twisted Pro™ Allison 1000 Transmission

⚠️ Fits 2001–2010 GM Duramax 2500HD / 3500HD (2WD & 4WD)

💀 Built for Heavy Towing. Built for Hot Tunes. Calibrated the Twisted Torque™ Way.

Up to 650 HP | Up to 1,250 lb-ft Torque

The Twisted Pro™ Allison 1000 is designed for Duramax owners who demand more than a stock replacement transmission.

This is not a basic rebuild.

Built for heavy towing, performance tuning, larger tires, and demanding work truck applications, the Twisted Pro™ package incorporates significant upgrades over our Street™ series while maintaining excellent drivability and long-term reliability.

Whether you're towing heavy, running performance tuning, or simply want additional durability, the Twisted Pro™ Allison is built to handle the load.

🔥 WHAT MAKES THE PRO™ DIFFERENT

🔥 Single Disc Billet Torque Converter Included

🔥 Raybestos GPZ / Alto G3 Performance Clutches

🔥 Maximum Clutch Capacity C1-C5

🔥 Redline High Pressure Front Vane Pump

🔥 New Allison Gear Pump

🔥 High Pressure Performance Valve Body Calibration

🔥 Upgraded C2 Apply & Release System

🔥 New Internal Harness & Speed Sensors

🔥 Deep Capacity Aluminum Pan

⚙️ POWER RATING

🔥 Up to 650 HP

🔥 Up to 1,250 lb-ft Engine Torque

💡 Designed for heavy towing, tuned Duramax trucks, and demanding work applications.

⚙️ INCLUDED TORQUE CONVERTER

🔥 Single Disc Billet Torque Converter Included

• Increased lockup durability

• Improved towing performance

• Improved clutch holding capability

• Matched for daily driving and heavy-duty use

🛠️ INTERNAL BUILD SPECIFICATIONS

🔩 CLUTCH SYSTEM

🔥 Raybestos GPZ / Alto G3 Performance Clutches

🔥 Maximum Clutch Capacity C1-C5

• Performance friction material throughout

• New steels throughout transmission

• Precision clutch clearance setup

• Improved holding reliability under load

🔧 PUMP SYSTEM

🔥 Redline High Pressure Front Vane Pump

🔥 New Allison Gear Pump

• Improved hydraulic stability

• Improved pressure control

• Designed for increased clutch holding capacity

• Precision inspected and assembled

⚙️ VALVE BODY

🔥 High Pressure Performance Valve Body Calibration

• Improved clutch apply control

• Improved shift consistency

• Improved holding capability under load

• Optimized pressure management

🔌 ELECTRONICS PACKAGE

🔥 New Internal Valve Body Harness

🔥 New Speed Sensors

• Internal electronics inspected and verified

• Pressure control system verified

• Ready for installation

🔩 HARD PARTS

🔥 Upgraded C2 Apply & Release System

• Drums, hubs, shafts and planetary assemblies inspected

• New bushings installed throughout transmission

• New bearings installed

• Endplay measured and verified

🧴 SEALS & GASKETS

• Complete overhaul kit installed

• New gaskets, seals and sealing rings

• Bonded pistons inspected and replaced as required

• Hydraulic sealing integrity restored

🧊 FILTRATION & COOLING

🔥 New Allison Spin-On Filter

🔥 New Allison Flat Filter

🔥 Deep Capacity Aluminum Pan

• Increased fluid capacity

• Improved heat management

• Ready for installation

💡 IDEAL FOR

✅ Tuned Duramax trucks

✅ Heavy towing

✅ Work truck applications

✅ Larger tire setups

✅ Daily driving

✅ Performance street use

⚠️ NOT INTENDED FOR

❌ Competition sled pulling

❌ Dedicated drag racing

❌ Extreme horsepower applications

👉 Step up to the Twisted Punisher™ Allison 1000 for aggressive performance builds and higher horsepower applications.

💬 NEED HELP?

Questions about fitment, towing, installation or setup?

📞 833-858-9612

📧 sales@twistedtorque.com

Built Strong. Built Twisted.