I have a 98 12 valve auto.. it has bhaf 3gsk, 215 injectors, 100 plate, afc tweaked, timing bumped, boost elbow, airdog 100 pump, also has fresh rebuilt trans.. first and second gear seem ok but 3rd and 4th are just way to slow on the top end.. once my truck hits 1800 rpm it just screams away just does not go anywhere.. when it hits overdrive i finally get my power back.. but trying to get on the highway is not very fun unless im at half throttle.. maybe im just expecting to much out of it idk.. so what should i do to help my power above 2k rpm? Thanks!

 

DPC torque converter

 

and while your in there input shaft as well