Automatic Transmission Tech Resources

Video

Ethan Patterson of WP Developments explains the ends and outs of a roller type sprag vs a factory style sprag and why we use what we do with each build.

Article

Eliminate failure by inserting 68RFE check balls into the correct location.

Article

Our manual valve body allows us to use the four strongest gears in the 68RFE.

Video

HorseTorques Diesel visits WP Developments in Indiana.

Article

It’s no longer a secret… heck, it’s no longer that special for a diesel engine to make 1,000-plus horsepower. It’s become commonplace, and due to that increased capability, it seems these days, OE manufacturers are rating transmissions at their absolute limits.

Video

We didn’t know this was possible until we saw WP Developments social media post. Ethan from WP joins us to talk about the first full manual valve body for 68RFE-equipped 6.7L Cummins, how they work, hold power & more!

Video

We chat with Ethan from WP Developments and ask the question, what is the best transmission for power and performance? If there is one, why does it beat anything else offered from Ford, GM or Ram? Tune in as we go in-depth on this topic!

Instructions

The 2C stack up we designed is engineered to never allow the friction to fall below the 2C reaction planet. We do this with a custom thickness 2C billet piston and thin steel added into the stack up.

Video

Ethan from WP Developments joins us today to talk 68RFE’s! We ask what are the three common failures, how can they be avoided and if your transmission is toasted, is bigger always better? Ethan also drops a hint about a 68RFE build going behind a 2000+ hp diesel engine.