I just had 3:90's put in last month, and honestly, I did eibach springs, rear control arms and 315's on the back and I still have not traction, even if I start out in 1st easy, shift to 2nd, get to about 2000 rpms and punch it, tires will break loose everytime. I don't get it. Have to figure out something else. But as far as the 3:90's go, I like'em. IMO they are worth it.

 

alright sweet..then im going with 3.90's thanks for the info...and i have drag springs going in along with 315 nitto drag radials so i hope i will be ok....theni have the issue of the nitrous...so i guess we shall see what happens