Hard Starting After Warmed Up.....Arrrg

Idle timing is initial. With vacuum disconnected and plugged, keep your timing light on the mark and, as you increase RPM, you'll see the timing increase. Keep going until it no longer increases, then go a little more to make sure! The reading you get is initial + mechanical.

Say you set initial at 13* and as you're increasing RPM it increases to 36* and stops. 36* is your initial + mechanical. You want to stay under 36* without vacuum advance connected.

If you're over 36* you either have to decrease initial, or keep the mechanical advance in the distributor from advancing that far. Two ways to do that are 1). weld up the slots in the dizzy mechanical advance plate so it doesn't allow as much movement. or 2). Purchase an FBO limiting plate at:

http://www.4secondsflat.com/Mopar Mechanical timing limiter plate.htm

Working on these old gals is what keeps it fun!!!:burnout: