rear end advice

[meissen]

How am I running so many rpms?

Because everyone that's quoting RPMs is giving 6 speed RPMs and not realizing he said 4L60e. You're spot on with what you said - 2200-2400.

[Derek]

3.73s for sure. Had them in my old car and loved them. When something happens to my current rear end I'll definately be installing 3.73s.

[1qwikSS]

i have 3.73's currently and i like them, however i wish i would have gone with a 4.10. I have a 6 speed tho, so i dunno what rpms an auto would make.