12v cummins 300hp with 5r110w

[Elias799]

Hello, I am looking to swap in a 12v in to my f450

Just wondering how the 5r110w will hold up behind a 300hp 12v with no torque management / defueling on shifts

Any help greatly apriciated

 

[spg]

Any upgrades done to the trans?

 

[Oledirtypearl86]

It'll hold better than any dodge trans

 

[oldmisterbill]

Most important - keep the trans COOL! Run an ext cooler. Add a temp gauge. You will know when it’s getting hot, and back off till it cools. It owed over 200000 on a Jasper rebuild. Sold it 10 years ago was still hauling hay when I last saw it. I ran 2 cooler in front of the radiator plumbed in parralell for better cooling. It never ran over 190, when pulling with up to 23000 gross.