Engine/Transmission (1994 - 1998) 96 auto trans valve body swap

[IJalaskari]

Hi;just installed BD valve body. Truck works fine in 1st & 2nd,but when trans in drive it starts to slow down in a few secs. Even if you apply more throttle. I quickly put in neutral and it coasts fine. When in drive it is as if you put on the brakes after a couple of secs. I did not check line pres. b4 install. Only problem was since installing 75hp injectors had slight shudder when trans went into top gear at light throttle applications.