Use or don't use vacuum advance on distributor???????????????????

mopar head said

moper---but all you're doing is adjusting the amount of vacuum it takes to move it. Not the amount of degrees of advance.


Maybe the OEM was this way but the MP conversion vac. can. adjustment just limits/increases the movement, not the amount of vacume it takes.
If this were the case we`d be golden with low vacume cam engines
Or am I wrong?

Click to expand...

I've owned 2 Mopar conversion distributors (one old style and one of the newer ones with the Mallory type centrifugal advance mechanism) and both had the adjustable vac can and I tested both with a timing light and the adjustment did not affect how much timing it added, only affected the vacuum level in which it pulled in. Did you verify what yours does with a timing light?