MSD timing on OEM spec'd 440

Hey gang..
Got the MSD up and running. I noticed that the timing characteristics if it versus OEM points is different. I both ran the MSD with the points dist. as a trigger ( with condensor out ) and last night ran it with my Chrysler electronic distributor. Didn't get to take her out last night due to son's football game. But, I did drive it Sunday with the points as a trigger. The idle seems rougher than with the OEM points distributor, but man oh man, the performance enhancement when driving and getting on it is like night and day. I was curious for those running the MSD on their somewhat stock 440's, what are you doing for timing?

1. Are you setting the timing to OEM spec ( about 10 degrees BTC at curb idle without vacuum advance ) or

2. Setting it at total degree advance ( say about 32-35 at 3000rpm ) and letting it be?

This will eventually be used on the 426 HEMI when I install it in the next couple of months

Thanks in advance...

Those are some damn fine questions. My dads 440, now 505, idles best waaay advanced with the spark box than at 12 btdc. I would like to know why also.

I haven't run OEM specs in over 30 years! Even back then it usually wasn't optimum to do so. Give it what it likes and pay attention to your plugs to make sure you are not experiencing detonation etc.