I have achieved 83000 rank in vitee can i get any core engineering branch in vellore or Chennai
In order to get seat in the core branch you need to oay some amount then actual tuition fees which depends on your rank try attending counseling

With this much rank you can't able to take core branch in these two campuses because for that your rank are too much high. But yaah may be you can get in Amravati or Bhopal campus having branches like ECE or Civil.
Good luck
I am sorry to tell you that based on your VITEEE 2018 rank your chances of getting core branches at Vellore or Chennai campuses is quite low under any category.But you can try for other campuses of VIT UNIVERSITY like AMARAVATI and BHOPAL.
Good luck.
Go for counselling yu will sure get
Dnt look on Internet they all are lier