Intake gasket replacement

Have 98 transport that need to replace the intake gasket because of leak. I'm going to try to replace it in about two days, so looking for information on how tight the bolt need to be. Is there a place I can get more info on this subject?
thanks

http://www.automotiveforums.com/vbulletin/showthread.php?t=883188
http://www.automotiveforums.com/vbulletin/forumdisplay.php?f=116
http://www.automotiveforums.com/vbulletin/showthread.php?t=883262
Extremely well documented info is same in all these links, but various comments added