Join Date: Sep 1999
Location: San Diego, CA
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Re: clocking ring specs?? dana 300 or others
I drilled my t-case (as Leve noted) and getting the proper spacing is actually not very hard. It ended up being much easier than I would have guessed.
Here are the basic steps I used and it worked great:
1-put t-case in desired position (in the jeep) and mark where one of of holes will need to be to line up with the tranny output hole.
2-remove t-case from jeep and put it on a bench to mark holes.
3-screw a bolt into the nearest t-case hole to the index marking you made in step 1.
4-make a template that uses the bolt as a 'stop' and drill a tiny hole where you marked the correct indexing (you will need to make sure the hole is the same distance from center as the regular tcase holes). I made the template out of 1/8" steel and shaped the inside edge to it would ride on the t-case input shaft consistantly.
5-drill through the template's tiny hole and start your hole in the tcase enough to mark it.
6-put the bolt in the next hole, push the template up to it, drill through to mark.
7-repeat for the remaining holes.
This way the holes end up being spaced exactly as the stock holes. The only real trick is to make sure the center of your new holes is the same distance away from the input shaft as the stock holes. I wish I would have taken a picture.