Randy's Transmissions 865567123 6R140 Transmission Stage 2 800HP

The Stage 2 6R140 transmission is our most popular unit for the 11-19 6.7 Powerstroke engine, and is rated up to 800 horsepower. This transmission is built with heavy-duty components, including upgraded clutches new modified valve body, billet OD piston, and more- making it more durable and reliable. Mated to this unit is our in-house built captive clutch converter, which provides increased lockup, resulting in better acceleration and pulling power. 

• Heavy duty captured clutch custom stall converter
• New factory valve body O.E. with oil mods
• Raybestos or ALTO G3 powerpack steel and friction module
• New filter
• Billet OD piston with high return springs
• HD Cast Aluminum deep pan
• All new gaskets and seals

• Appropriate gear ratios

  • 35" tire min gearing is 3:73 recommended 4:10
  • 37" tire min gearing is 4:10 recommended 4:30
  • larger than that should be running a 4:56 ratio