318 2bbl won't idle without choke

Well after the old "stare at the car sipping a beer for a couple hours" I've decided I'm going to pull and rebuild the engine. I will probably do a very -very- mild build power wise. I want to keep it able to run 87 and something really strong like a built 360 would just spin my 14" Polyglas instead of doing anything useful. Plus, I'd need to change my radiator and shroud which I'd rather not do since I *just* bought a real nice set.