I just installed a autometer vacuum gauge, using a tee right out of the passenger side of the intake before the check valves, what is the normal vacuum for a 2000 dodge ram 5.9l? Thanks guys just let me know what yall think.

 

18-20Hg

Unless your at high altitude and the engine is idling normally.
Needle should be steady too

 

rabbler - Thanks I am right at 19 hg, at idle and the needle is steady, and it goes up when the engine is reved. so does this sound right?

 

pretty much.

A fluttering needle indicates leaking valves.
The needle should drop instantly when you go WOT if it hangs or slowly drops it can indicate a restricted exhaust (converter)