John Woods Trans
I was experiencing similar issues you have had. After putting in bigger injectors and a larger turbo (which I grenaded yesterday
!!)
1.Stock trans
2. Ford heavy duty towing trans.
3. Ford trans
4. John Woods racing transmission.
John is a awesome guy to deal with. I smoked the second and third Ford transmissions hualing cows up here in montana. I ordered a John Woods transmission and smoked one of those due to a manufacturing problem with the guy that builds his Billet forward drums. He was very helpful in diagnosing what was wrong and the guy knows his stuff. We talked on the phone and he had me send him a video of how it was acting. I had to ship that transmission all the way back too California and it didn't cost me a thing he paid for the shipping, rebuild and new Shaeffer's fluid (which by the way that stuff is the cats meow). My truck was back on the road by the next week.
Later I had weird shifting problems. Probably due to the contamination of the cooler from the last burn up. I flush everything best I could but must not of got it all out. Well John sent me a whole shift solenoid pack on his dime Didn't cost me a thing!!
Haven't had I lick of problems in the last 2 years. This last summer I pulled 4 27000lbs loads from the hay field and that baby didn't miss a beat.
It shifts great doesn't have hard shifts like most built up transmissions do.Which is better for your whole drive train.
My buddy put a ATS in his 6.4 and has had nothing but problems and has had very heated conversation with them trying to get them to stand behind their name.He no longer owns that truck!!
You can't go wrong with using a guy that stands behind his name John Woods!!! He is my transmission guy for life even if I live thousands of miles away.
He offers a program where you can actually come watch him build it and learns you up on how it all works. Pretty cool!!
At least spend a few minutes to check him out.
http://jwtt.com/services[url]
John...ng troubles I could probably PM you his cell.