I decided to put a 350 in mine, and I did some research that might be helpfull. It turns out you have to get an engine from the same era as your camaro, because you have to worry the knock censor, and computer.
Thanks for the replys. I've been out sick for a while and out of town.
Jolley you mentioned the knock sensors on the 69 block. It can be tapped for the sensors...