I have an adjustable vacuum advance on my HEI and I'm not sure how to measure/read where it's set. How do I know where it's at? Initial timing is 16º and it's at 36º @ 2800 rpm.
Thanks I was fearfully looking for this I read this about a year ago, it has some great info!This takes the bag of snakes and lays them out in a straight line.
I ran a stock HEI with the Vacuum advance with no issues, but this engine will spin 7000 + rpm, a bit more then the stock coil is good for, so I up graded and now have an adjustable can. I'm going to try to dial it in and see what I can get it to do, I'd rather try to get it working if possible. If not, I'll pull it off. I'm not running an MSD box.with it at 16 you could run without it just use soft mechanical advance springs, ive ran this way for years on the street with sm/bbc or set inital to 10 or 12 and play with it, everytime i tried hooking it up with an adjustable i got spark knock, i also run a msd6a box with a stock hei and coil.