hey Bird//////

I wonder if that one has the ball bearing upper?

Funny you should say that. I have two old Mallory YL tach drives here right now. Both have ball bearing upper bearings, and are circa 67 or so.
The tach gear is pinned on with a roll pin, not part of the shaft. It's a better design, but the advance mechanism sucks. Springs and weights under the points plate.:bonkers:
 
I wonder if that one has the ball bearing upper?

I believe the BBQ`d dist is listed as a #1111247 which was not a GM ti, by looking at the remains I bet it had a Mallory unilite...If your interested I have a ball bearing #263 I`m looking to sell, the one I have looks NOS, even has the original revere rotation lower gear which has zero wear.....
 
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