Part numbers would be great. When I do an online search, I find two different seals. Both are cheap, like $5, so I don't know which one I need. Also, they show a bushing for the front. Should I get that also?
Didn't you complain of fluid leaks? Where is the fluid leaking from? You might need to replace the front pump seal and the gasket behind it as well, while it's all handy for the low cost of the parts..
Take the old seal, Buy two (chances are you are going to ruin one) Bring seal home and check fit on converter, Pack inside seal ( where the spring is) with Vaseline. ( this keeps the spring from dislodging when the seal is being tapped in). Changing the bushing would not hurt, This could possibly be why it is leaking, BUT the bushing replacement is a little more involved. First don't get the C4 bushing, Get one for a C6. (the bushing is longer therefore more surface area is greater which will hold converter more sturdy). Now you need to remove the front pump, ( i have never tried to replace the bushing without removing the pump, I'm not going to say it cant be done) But if you remove the pump you will need a gasket and probably the sealing rings. You might as well just buy a overhaul kit from Napa or your choice of parts store. Then just give her a cheap overhaul. Anyway if bushing replacement is your goal, remove the pump and disassemble. You will then see where the bushing goes, But be careful getting the old one out, you don't want to scratch or mar the surface. The best way i found is to use bushing drivers with a press, Press the old one out and the new one in, The seal can also be pressed in now without fear of dislodging the spring.. P.S. If you don't want the drums falling loose when you remove the pump, Set the trans up in something like a old wheel on blocks or something, (so the pump will be turned strait up) with no pressure on the output shaft. Now would be the time for a refresh of the trans, And i know there will be some negative comments on what I'm going to say but: To help you I'm going to give my 2 cents worth. Napa sells a complete trans overhaul kit for less than 100 bucks, Although this is NOT a racing kit with racing clutches and parts, This kit can be used for moderate performance with very good results. ( i have used these kits in the past with very good results) Gamble the money and i believe you will be happy with the results.
Honestly, I don't want to put that much effort into it now, even though your suggestions are very good (Blown). I want to put the motor in and run it 500 miles as a "break in" and then I will be pulling the trans out for a complete rebuild by a shop. I know it sounds stupid to put the motor in and then start yanking stuff out after 500 miles, but for me, 500 miles may be as long as 6 months time driving around. I will do my best to take it easy on the trans with the new motor, definitely no drag racing or dyno runs. The trans is in relatively good shape, I just don't want to "push it" too far or too hard. I still have the stock converter on it and in 3-4 months, I will have paid off my truck and have a little extra cash laying around after bills, then i can FINALLY get the trans rebuilt. And, no, I will not leave the motor out for the next 6 months until I get the trans rebuilt. Sorry, I don't have that much patience, and I am getting sick of the engine sitting on a stand in my garage. Just not enough room for it. Currently, it leaks all over. It does leak in the front, but not as bad as the pan and linkage on the side. Might leak more in the front now that I have taken the motor out and in against the seal. So I will just have to swap that seal and drive it a few months and have it professionally rebuilt.
