I got all fluids in and had my first start up. It was a huge milestone, but wasn't without issues. The engine would run for a short period then start to run poorly and want to stall out. I posted a thread in the LS swap section to see if anyone else experienced issues like this. From what I can tell, it sounds like it might be due to the fact that my O2 sensors are right at the end of the header collectors, which are open to atmosphere with no exhaust system behind it. Hopefully once I get the exhaust system installed, the engine will run better. Here is the thread for those that are interested.
http://67-72chevytrucks.com/vboard/s...d.php?t=806996