Hi Aspirant,
Hope you are doing great as per the question asked by you, as you are having 607 rank in S.R.M J.E.E so you can easily get C.S.E in main campus as closing rank of C.S.E is around 9,000 to 10,000 so you can easily get C.S.E in main campus.
For more information you can visit the link given below:
https://engineering.careers360.com/articles/srmjeee-cutoff
Hope you found this answer useful. Stay motivated stay positive.
All the best!
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