SB 727 troubleshoot

[mycuda]

Hi, hoping a trans guru out there can diagnose this problem.
Put this 727 trans on 318 into dart just for ease of installation.(by myself)
Trans came with 318 engine I bought. Knew nothing about its condition.
All I did was change filter/cleaned pan didn't smell bad or burnt or metal shavings visible.

Car shifts but only after being in neutral a while. Seems sluggish but engine runs great.
When I first put trans fluid in started up in neutral, put in drive nothing. well a few quarts overfilled then car starts to move and shift. Let warm up shut down. Next day gallon of trans fluid under car I believe from bottom of filler tube???? Not pan. No leaks until after shut down when hot.

Torque converter?

Thanks for your time.

 

[bOb shingler]

sounds like it's time for a rebuild, all the soft seals are hard.

 

[transman]

sounds like it's time for a rebuild, all the soft seals are hard.

X2 Time to come apart.

If it does need to be rebuilt, make sure you replace the converter with a rebuilt unit, and make sure the front pump bushing is replaced.
If you suspect the leak is from the converter area, hub is likely scored.

 

[AJ/FormS]

So, are you saying that you installed the tranny onto the engine? If so, did you correctly fit the TC; to the pump,and input,and stator support? And was the TC known to be a match to the tranny? The reason I ask is , it sounds to me like a problem in the pump. In which case it will have to come out.
Unless somehow that new filter is more or less completely restricting the pump pick-up.Guess thats worth a look-see.
As to the leak; that could be the o-ring at the bottom of the filler tube, coupled with the overfull tranny.

 

[mycuda]

Found a different trans out of running vehicle.
Going with that for now.

Thanks for responding, if and when I find problem with trans
will post.