I have a 3.6 gpa and I was accepted to UCI.... I think they look more at your major preps than anything else. An A average in Calculus is very very good and the B average in both econ's isn't too shabby either. I think you should have a good chance.
I believe there are transfer agreements/contracts for UCI, UCR, UCD, UCSD, UCSB, and UCM. All you need to do is fulfill your pre-req's, sign a contract, and maintain a certain gpa, and you're basically in.