This is a unknown year cheby j-jet on a stock 81 Buick 350. It has been fully rebuilt a few thousand miles ago. The idle air screws are set at 4.5 turns out and the vacuum fo the brakes, trans, and vacuum break are hooked up It runs fine when driving but idle speed needs to be set high (800+ rpm) to idle smooth in gear. The timing is set at 12 deg with vac. advance plugged and total timing is 32 deg at 2200 rpm with crane adj. advance and yellow mechanical springs. No smoke out exhaust and exhuast doesn't smell rich. I need to know which ports I need to hook up and which ones are just for smog stuff. I will get it all sorted out later on but for now I need to make it run ok. Suggestions?