Will stock rims from a 1998 camaro fit my 85 z28 camaro, i think they are the same bolt pattern just a bigger size rim 17x8 any help would be cool thanx.

 

Yep, you'll need to buy a set of 2" spacers for all four corners though.
This site explains everything-
http://www.skulte.com/adapterfaq.html
That site shows the required spacer size for most popular wheel designs and you can do a search on here for any wheels that aren't on there- I guarantee someone has used or considered any wheel you can think of at some point and the fitment issue has been covered.

And also, some good rules of thumb for your wheel search- anything below 5 inches of backspacing with the 5x120 (5x4.75) bolt pattern will be a direct fit. You can run any wheel, but you'll need spacers for more backspacing or bolt pattern adapters for different bolt patterns. American Racing, ROH, Cragar, and Fikse are the most popular for direct fit aftermarkets.