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6R140 Transmission Stage 2 800HP

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Core Charge: +$1500

Stage 2 6R140 - 800HP Max

2011-2019 6.7 Powerstroke

This is the minimum build for a 2017-19 Powerstroke


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
More Information
Brand Randy's Transmissions
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2 Year unlimited mile limited warranty will not cover broken cases or shafts of transmission. Abuse, misuse, or burn down due to operator error will void warranty. Any warranty work must be performed at Randy’s Transmissions in Tooele UT. It is the vehicle owner’s responsibility to ship transmission or vehicle to Randy’s location for any and all repairs needing to be performed. Any repairs to transmission not authorized by Randy’s Transmissions will void warranty and will not be covered by Randy’s Transmissions.



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