I noticed that off the back of my carb there is a little rectangular block w/ two nozzles on it on has a vaccum line atached the other is sucking alot of air, where should this be attached or should it just be plugged?
Shucks, install a vacuum gauge in the car, and then you can make use of the extra port. I have one, and it's a great tuning / troubleshooting aid. Oh, as for your question, do you have a vacuum reserve canister or auto trans? The canister could not be hooked up and you may not notice.