I had my tranny rebuilt about a year ago by ammco and I told them that I wanted firm shifts. Well when I got the truck back NO FIRM SHIFTS. So what I want to know is can they adjust the valve body or something to make it shift harder? Or even turn the pressure up? I talked to one of the employees there and he said that he doesnt think they can. Are they just trying to avoid doing the work?

 

If you want someone who can probably answer your questions I would call "Performance Authority" located in Bend. I realize they didn't do the work on your tranny but they have some sharp people over there who can answer your questions. That is who I will take my truck to when the time comes either them or "Source" in Gladstone, Oregon. Just my 2 cents worth...

 

transgo shift kit. You have to modify the valve body and theres no more wondering if your truck shifted or not.