idle problem with my 95 lt1
 

i have a 95 lt1 and im having no luck with it what so ever. ive had it for almost 2 years and its always been givin me some type off problem. at the moment my car putters when it idles in drive and it gets worse the longer it idles but it drives just fine for the most part, so far ive replaced a bad camshaft and new lifters and new o 2 sensors, had a carbon cleanin, replaced distribitor cap and in the process of replacing sparkplugs at the moment but nothing fixes it. ive studyed it as much as i can and when it sputters the voltage goes down everytime it does so, usually by .2 but it gets worse the longer it idles and can go down to 13.9 and lower at times. really annoyed with it since ive spent 3200 on it this year which is alot.

also on another note, is it nessesary to replace camshaft barings if u replace the camshaft? i asked the dealership about it when i had the work done a few weeks ago and he told me my barings were fine but i keep reading that u replace them when u replace a bad camshaft. and if i do have bad camshaft barings how would i know? cause my engine does make a funny sound that sounds like its coming from the bottom of the engine but im not a mechanic.