Hi Rohan,
You definitely stand a chance to get into IIMs A and C. IIM Bangalore gives a lot of weightage to your 10th and 12th marks and for this reason getting into IIM B might be a bit difficult. But for IIM Ahmedabad and IIM Calcutta, you definitely stand chance of getting admission.
All that said, you should also be cleared with the fact that in order to get admission into IIM A / IIM C, your CAT percentile should be 99.5 or greater to be on the safe side considering you are a GEM (General Engineering Male).
Hope this was helpful.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile