I have a 727 transmission in a 75 scamp with a built 340 it has a reverse full Manual valve body it was running good then I changed transmission fluid and put atf+4 in it now when driving sometimes it feels like the car is braking and holding it back I can floor it in 2nd gear and it want tach over 4000 and the brakes are not sticking pretty sure it's the transmission. Can someone help if the transmission can cause that
is it possible something went awry on the engine install with regard to the transmission? torque converter hub not seated properly, torque converter not engaged properly, kick down or linkage not attached properly, a bent or kinked line?
and maybe one of those instances were already at work, and changing the fluid & filter just happened to be a coincidence with the problem you're currently having.
I can't see how the pinion leak would have any effect on transmission operation.
