Well, I hope this is the right place to post this... I would like to know where to find "normal" scanner info? As in, what all the readings (maf, map, o2, etc) should be in an engine that is running right at any point in time (cold, idle, road tests, etc. Thanks!

I also need the same data to trouble shoot my Z-28 305ci stock motor... Thanks

http://www.ChevyThunder.com
Look at the 86-92 Pinout page
There are typical values for what you should have.