Hello kalyan

I hope you are doing good. I would like to tell you that their are many tier-1 colleges in tamil nadu which do have very good placements for mechanical branch . For getting admission in these you need to get very good rank in jee mains or in tancet. Start preparing with full consistency

Following is the list of colleges

Coimbatore Institute of Technology

Amrita School of Engineering, Coimbatore

IIT Madras - Indian Institute of Technology

NIT Trichy - National Institute of Technology

Madras Institute of Technology

SASTRA (Deemed )

Hope you found this answer helpful. Good luck for your future

Vellore Institute of Technology, Vellore