Trick flow noob ?s

How much do you restrict flow? I have a set of TrickFlows and they seem to have a much smaller feed than factory or other aluminum heads. I think it's around 1/8" maybe a little smaller. Is that small enough or would one need to be around .060"-.080"?
Depends what type of rocker your running but .060 would be the biggest.
If you search the net, you will find a lot of discussion about the subject, usually around Indy blocks.