720inTX

Thanks everyone so far. I have previously changed the valve cover gasket, hoping that's where the oil was coming out. It didn't stop the leak. The spark plugs were dark with carbon- not sure how old. I bought this truck several months ago, and have been repairing 40 years of jerry rigging done by previous owners. So I have new plugs, new wires, and a new valve cover gasket. I am taking datzenmike's advice, starting small. I bought a thermostat, gasket and new upper hose. I was shipped the wrong parts from Autozone, now waiting for the right ones. I also ordered a top end gasket kit and head bolts. When those get here, I will pull the head and put on new gaskets. Hopefully that gets me running well. I am also looking for a good power steering pump. Mine sounds like a slaughterhouse under the hood. I find rebuild kits for these often- anyone have opinions on rebuilding vs. buying rebuilt? Thanks, guys.

My 1984 Z24 is leaking oil above and below the rear of the exhaust manifold, as well as overheating. Although I can't see a crack, I am expecting a cracked head when I pull it off. Where have any of you found the best price and quality for a replacement? I have found heads at Advance Auto or OReillys for $600-$700, and one at Auto Zone for $460. I am a little suspicious of the cheap one. I would like to make this repair once and not have to repeat it for at least several more years. Of course, I would like to save a few bucks if possible. Is there a respectable option in the middle? Thanks.