Gears & Axles - Changing gears

I have a 94 s10 with an lt1 a4 in it and right now I have a 12 bolt with 3.73 gears and 26 inch tall tires, how much difference do you guys think I will see in rpm at say 65 switching to 4.10's with a 29 inch tall tire?

Fill in your particulars here:
http://www.f-body.org/gears/

Thanks for the link! It's not showing up cause I'm on iPhone but I will check once on the computer