850RE OR 8HP50

The 8HP50 transmission is a high-performance 8-speed automatic transmission developed by ZF Friedrichshafen. It is part of ZF's 8HP family and is designed for luxury and sporty vehicles requiring robust and efficient gear shifting. The 8HP50 is known for its smooth operation, quick shifting, and enhanced efficiency, making it suitable for high-torque engines. 

• 8-speed planetary gearset: Provides a wide gear ratio range for better acceleration and fuel economy.
• Adaptive shift logic: Learns driving habits and adjusts shift points accordingly for smoother operation.
• High torque capacity: Designed to handle up to approximately 450 Nm (330 lb-ft) of torque.
• Electronic control module: Optimizes shifting patterns based on driving conditions.
• Lightweight design: Reduces vehicle weight for improved efficiency and handling.
• Compatibility: Used mainly in mid-to-high-end luxury and performance vehicles.

• Seamless shifting experience
• Improved fuel efficiency
• Better acceleration response
• Reduced NVH (noise, vibration, harshness)

The 8HP50 is favored for its combination of performance, durability, and adaptability across various high-end vehicles.

• Gear Ratios:
  • 1st Gear: ~4.71
  • 2nd Gear: ~2.84
  • 3rd Gear: ~2.19
  • 4th Gear: ~1.70
  • 5th Gear: ~1.39
  • 6th Gear: ~1.00
  • 7th Gear: ~0.83
  • 8th Gear (Overdrive): ~0.64
  • Reverse: ~3.21

• Adaptive Shift Logic: Uses sensors and learning algorithms to adapt to driving style and road conditions.
• Double Shift Strategy: Combines torque-based and speed-based shift controls for smoothness and responsiveness.
• Integral Hydro-Mount: Reduces NVH (Noise, Vibration, Harshness) transmission.
• Torque Converter: Lock-up type for improved efficiency during cruising.
• Electronic Control Unit (ECU): Integrated with vehicle's ECU for precise shifting control.
• Oil Capacity: Approximately 7.5 liters (varies with application)
• Lubrication: Uses synthetic transmission fluid optimized for temperature stability and wear resistance.
• Cooling: Integrated oil cooling system in high-performance models for thermal management during demanding driving conditions. 850re and 8hp50 transmission dodge, chrysler, jeep, and ram