power loss through transmission?

i have heard much about power loss through transmissions but is the loss greater w/ an older higher milage trans or a freash rebuilt one? Shift kits trans upgrades?

an old/worn transmission is going to lose more then a fresh one, but for a street driven vehical, not enough to worrie about unless you feel a problem

if i dont feel a problem that doesnt mean that there isnt a problem. the clutches inside could be worn out and slipping all the time and i would never know

with the combo you have, you'd notice it slipping. All drivetrain components cause parasitic losses of power. An auto has a slightly higher loss due to the torque converter's mass compared to a clutch/pressure plate on a stick shift, and since an automatic is basically a hydraulic fluid pump, there are more frictional losses internally too.

if i dont feel a problem that doesnt mean that there isnt a problem. the clutches inside could be worn out and slipping all the time and i would never know
thats playing the what-if game, although it is nice to have your vehical in mind, doing the PM on it is the best and cheepest way to keep it in good running order, its like saying, well my sb 350 is running good today, but what if the bearings are worn out...

well this wasnt a specific question so now what are some of the upgrades for automatic transmissions? th350 th400 700r4 what is the best design?

that depends do you want od or not? whats the use? a street machine or grocery getter??

well i am not looking for aspecific might i say. I was talking about all 3 of them th350 th400 700R4 even a 200R4. I would just like to know what are the upgrades for an automative transmmision? P.S. I am a 700R4 fan!!!

then go with the r4, shift kit it and youll have a nice one on your hands

are there any other upgrades besides the shift kit

stall converter, if the moter needs it, shift kit, kick down cable adjustments... thats about all i can think of, ive got no training or experence with transmissions, except the occasional fluid/filter exchange

ok thanks