<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: novadude</div><div class="ubbcode-body">What's the total timing? How much vacuum advance and how much vacuum to reach full advance?
The factory used rubber bushings to limit advance, and these often get brittle and fall off after 50 years.
Check basic "timing 101" stuff first. </div></div>
Rich
All of the above is where I think you should concentrate, JMO, gas alone may not be the fix.
Also what is the total advance at idle with the vac can hooked up ?
Spend some time reading this, very informative.
Vacuum advance and timing