727 torqueflite extra capascity oil pan.

[Hibbing_Coronet_500]

I am rebuilding my 727 myself.
I have it apart and it looks real good inside. Today I will be driving out all necessary bushing and replacing them.
New clutches and steels. New rings and servo seals.
4 Pinion planets. And bolt in sprag.
Trans go manual valve to charge converter in park.

I want to put a end to the leaking! I know it due to converter drain back. Ultimately the converter oil fills a already full pan. Then fluid begins to seep out from where ever it can.

My thoughts are:
Buy a deep / extra capascity oil pan with proper filter extension to keep filter down into the pan.
Then use the same quantity of oil as if using a stock pan. (9 qts)

Now we have extra room in the pan for oil to drain into. Hopefully it will all remain below the pan to gasket seal.
Thus ending the seepage from a over full pan due to converter drain back.

Think it will work?

[theman440]

It might work but you run the risk of uncovering the pickup when cornering. You can buy anti dranback valves for the 727.

[honcho]

Damn Joe, I have seen 1 person in my life overhaul a tranny,no way would I attempt it,too many little things that go into big things and just a whole lot of stuff going on in there. Good luck tho,and keep us posted,BTW the upgrade on my voltage regulator is still working fine! Thanks again Todd

[Joe mama]

If you add a deeper oil pan the oil level still need to be at the same level as with a shallow pan. If not like Jeff stated you will uncover the pick up on cornering and acceleration. The benifit of a deeper pan is the additional capacity not lower oil level.

[Hibbing_Coronet_500]

Thanks guys.
ill stick with the stock pan.

[Hibbing_Coronet_500]

Transmission is done! Easy build!
Tore into the engine. Found two weird looking lifters.
found a burr on the upper ridge on #5 cylinder that notched the piston.
found two oddball pistons. 2 that dont match the other six.

will pull them and weigh them to the others.