Originally Posted by Gary
That's interesting! 
Question: How did you prime the oil pump after the rebuild? (I use an old dizzy with the drive gear removed) I've always been leary about the screwdriver bit in the drill method as I feared wiping out the bushing in the timing cover if everything was not centered.
Also, did you check your oil to see if there are any metal shavings in it.
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I primed the pump with the big screwdriver in the drill method. I remember that I thought it seemed a bit scratchy at the time but I had nothing to compare it to.
The oil in the pump house was a bit grainy. I'll change it all out before I get it going again.
Talked to Gil today and new gears are unavailable so I'll polish whats there and reinstall.
Rallybob's original recommendation was for 33-35 degrees of total advance for my setup. 8-10 at idle and 25 mechanical. Given the specs, I think a 73, 74, or 75 dizzy would be acceptable.
1973 - 28-32 mechanical advance
1-5 vacuum
29-37 degrees total
1974 - 28-32 mechanical advance
1-3 vacuum
29-35 degrees total
1975 - 25 mechanical advance
5 degrees static timing
No vacuum advance unit
30 degrees total