6.2/6.5 Diesel 6L80E/6L90E 6 Speed Conversion Kit

6.2/6.5 Diesel 6L80E/6L90E 6 Speed Conversion Kit

Quadstar Tuning LLC

  • $2,250.00

Everything you need, except the transmission, to swap a true 6 speed automatic behind your 6.2 or 6.5 diesel!  This will work with both mechanical and electronic injection trucks (DB2 or DS4) and 6L80 or 6L90 transmission.

This kit will require the willingness to perform final tuning on your end.


  • PCS transmission communication module with universal wiring harness
  • Base transmission tune file
  • Custom multi-disk torque converter
    • Utilizes proper low stall speed for diesel applications
    • Uses all 6 mounting bolts
  • Bellhousing adapter kit with hardware and dowel pins
    • Provides 360 degrees of support for the 6L bellhousing flange
    • Ensures proper spacing for the included torque converter
  • ARP torque converter bolts
  • ARP flexplate bolts
    • Compatible with stock 6.5L flexplates or our billet flexplate offering
  • 6AN Transmission line adapter block
  • Crank sensor breakout harness for DS4 trucks
  • Wiring instructions
  • Informational documents for transmission selection
  • Informational documents for transfer case re-use or swap compatibility

Additional Options available by request:

  • HP Tuners MVPI 2 Interface for tuning the transmission's internal TECM/TCM
    • This is required if you don't already have access to one
  • Paddle Shifter tap shift kit
  • Toggle switch tap shift kit
  • DS4 trucks will require a tune to the factory ECM/PCM to disable factory automatic transmission control and trouble codes.
  • Tuning support

We Also Recommend