Can the rear housing be removed while the trans is in the car? I think I need to replace BOTH speedo gears--can this be done without pulling the tranny?

 

It is tight, but it can be done. Driveshaft will have to be completely removed, then there are 4 bolts that hold the rear housing on. Might help to put a jack under the trans and remove the crossmember for extra space. Be aware- sometimes the bolts that hold the tail housing seize and can be a bear to remove. That pesky "steel bolt into aluminum" thing.

 

Yes.
I've had to change the drive gear a few times with a rear end change. Make sure that you have a few extra drive gear retaining clips. There are easy to break the tab on.

It's time consuming but not so hard. Good luck.

 

good info--thanks...

Which drive gear (if there are more than one for e TH350) should I get for the TH350?

 

The tire size and rear end gear ratio determines which drive and driven gears are needed to get a speedometer to read accurately. Take a look at this site...

http://www.transmissioncenter.net/sp...____va.htm#350

 

yes...I know the math in general, I also know that a stock driven gear, with a 3.08 rear and stock tires is 19 teeth...

My questions was, what is the stock drive gear for a 1977 TH350...

Thanks!

 

Input all of your numbers into this caculator. It should tell you what drive gear is used with a 19 tooth driven gear.

http://www.bgsoflex.com/speedo1.html