At this rank chances of top IITs are almost NIL. But you can get lower IITs. It will also depend on your category.

IIT Guwahati: Civil engineering

general- 358

obc-328

sc- 252

st - 251

But some of the IITs conduct their interview and written exam for selection. So there are chances to get good IIT by performing well in those exams.

here is the list of IITs with their cutoff:

https://engineering.careers360.com/articles/gate-cutoff