Engine trouble Please Help!
I'm not an FE guy, but 10-12 is a good starting place. I'd think an FE head would like 34-36 total in below 3000, just as a guess. With performance parts, the stock Ford carb may not be able to feed the correct amount of fuel, but you can drive it around some with it. If the lobe center on the cam is 110 or better, it should idle fine below 1000. Like 800 or so.
1967 Falcon 4 door 351C - 70 Mustang 351C
Owner built, owner abused.