What is a good stall to go with a 3:23 Sure Grip?

Absolutely agree. But they will need those camshaft specs. If they tell you some boosheet like 2500 stall.....keep shoppin.
I spoke with them last week already and they wanted every spec I could give them, and also suggested I move to a 3:55 if thats not what I already had (had not done the ratio test yet)