There are around 500+ Engineering colleges in Tamil Nadu which have best rankings, placements, packages, ratings, etc. Some of them are listed here base upon NIRF ranking (High to low):

1) Vel Tech Multi Tech Dr Rangarajan Dr Sakunthala Engineering College, Chennai
2) Sri Krishna College of Engineering and Technology - SKCET, Coimbatore, Tamil Nadu
3) Sathyabama Institute of Science and Technology, Chennai, Tamil Nadu
4) Saveetha University, Chennai, Tamil Nadu
5) PSG College of Technology (PSGCT), Coimbatore, Tamil Nadu
etc.

You can find many other Engineering colleges in Tamil Nadu at Collegesearch.in including detailed information about NIRF ranking, Placements, Eligibility, Fees and many more.