Allison 750HP Rebuild kit

TDP Allison 1000 Stage 3 Performance Transmission Package 

If you’re tired of slipping clutches, lazy shifts, and transmissions that can’t keep up—this is your solution.

The TDP Stage 3 Allison 1000 Package is a complete, no-compromise build designed for high horsepower trucks, heavy towing, and aggressive use. Every weak point in the factory Allison is addressed with proven upgrades that increase holding power, improve shift quality, and ensure long-term durability under real abuse.

This is not a “rebuild”—this is a full transformation.

  Complete Package Includes:

Hard Parts & Structural Upgrades

• 300M Billet Input Shaft – Eliminates factory shaft failure under high torque
• C2 Clutch Hub Upgrade – Strengthened for increased clutch holding capacity
• C3/C4 Retainer Assembly  – Reinforced for high load applications
• Goerend PTO Cover – Improved oiling and durability under stress

Clutch & Friction System (Full GPZ Stack)

• C1 GPZ Frictions & Steels
• C2 GPZ Frictions & Steels
• C3 GPZ Frictions & Steels
• C4 GPZ Frictions & Steels (Modified)
• 5-Clutch Module Upgrade – Increased apply area & torque capacity
• Overhaul Kit w/ Bonded Pistons (OHK) – Eliminates common sealing failures

Valve Body & Hydraulic Control

• RatioTek Performance Kit
  • Increased line pressure capability
  • Faster, firmer clutch application
  • Eliminates slip, flare, and lazy shifts

Converter & Supporting Components

• Performance Allison Torque Converter – Built to handle increased power & lockup load
• Deep Transmission Pan – Increased fluid capacity & cooling
• Spin-On Filter + OEM Deep Pan Filter (White) – Proper filtration for extended life
• Complete Bearing Kit
• Complete Bushing Kit

Electronics

• Updated Gray Internal Wire Harness – Addresses common electrical failures