Jul 3rd, 00, 01:46 PM
I have a muncie from a '65 Chevelle. It is not in my car yet because I noticed it is leaking. Its ;eaking below the front shaft whcih there is a black circle. I'm wondering if this is some type of relief thing that can leak if the trans is not level or If I have a problem to deal with before I install the trans
Jul 3rd, 00, 03:41 PM
I think on a Muncie, the countershaft is driven through a hole in the case just under the input shaft. It is a press type fit and the ones I have seen have sealant placed over the area once it is driven in. That must be what the black circle is. I don't know what can be done about it except maybe scraping of the old sealant and re-sealing it.
Jul 3rd, 00, 04:09 PM
Thats the countershaft pin as Rich253 stated. If you have a leak from the pin hole it's because the hole is oversized. Depending on how bad it leaks you have a few options. You can use some silicon sealer, have the case rebushed, find a better case or use a new countershaft pin that has an O- ring on the front end to seal the trans hole. The O-ring pin can be bought from Larry at D&L at 631-351-4837.
Hope this helps
[This message has been edited by secndgn (edited 07-03-2000).]
Jul 5th, 00, 10:01 AM
I've had several Muncie transmissions leak at the case where the countershaft is pressed in. The usual cause is the previous rebuilder "peened" the case to try and achieve a tigher fit around the countershaft. The local rebuilder here in Detroit machines the damaged aluminum from the case on a Bridgeport mill and installs a bushing. Real slick.
Contact Liberty Gears in Taylor, MI for more info. Can't locate the phone number off hand, but it's 313 area code.
Jul 5th, 00, 03:25 PM
It would be easier and faster to change the case. That is a 325 casting if it is original to the car. The counter pin is 7/8. There is a ton of those cases around. Send me an email and I will put you on to someone with a good case.