Yes it is possible what you are saying, you have marks of 170 in b arch jee mains paper 2. Being a sc candidate. Their is a fair chance that you will get NIT TRICHY by round 2 or round 3. Well if you have rank under 250-260 for home state and under 160 for other state then it is possible for you to get a seat in NIT Trichy.

Thank you.