WTF 727 troubles--EDIT may be fixed

I would suggest changing the filter - a trans low on fluid or error in kickdown adjustment could skid the clutches enough to plug the filter.

My 727 did this. I would take it out. It would back out of the driveway fine. I would drive around matting it or take it to the track and put the mickeys on it. Car would shift and run just fine. Bring it home & park it.

The next time I try to drive it, it would act low on fluid. When I put it in R, and tried to back out of the garage, i'd have to rev the crap out of it, like it had a 5,000 stall converter. On the road, it would hang in low gear, and finally shift with a bang. It would seem to float in and out of 1, 2 3 gears at light cruise.

I think my trans was not up the hp, and during a hard day it was chewing up the clutches. With the fluid stirred up, and the fluid hot, the pump was still getting fed. When it was shut down, the crud would pile up under the filter. On start up, the fluid was thick, and all the gunk would get sucked right into the filter and plug it up. Then it starves the pumps, and the clutchs skid even more.

Changing the fluid and filter always worked until I flogged it on slicks again. This was maddening because at the same time I also had engine oil dripping out of the trans inspection cover, and thought it was ATF. I always changed the engine & trans oil at the same time so it took forever to figure it out.