With an SC category rank of 85428 in JEE Main, getting into the top NITs or IIITs is quite challenging. Generally, the cutoff ranks for the SC category in good NITs and IIITs tend to be much lower than this. For instance, the closing ranks for SC category students in popular branches like Computer Science or Electrical Engineering in well-regarded NITs often fall within the top 20,000 to 30,000.

However, it's not impossible to secure a seat in engineering colleges. You still have chances in some of the newer NITs, some IIITs (especially the ones established more recently), and several Government Funded Technical Institutes (GFTIs). The cutoff ranks for these institutes can go higher, and your SC category can provide significant reservation benefits.

You should also explore state government engineering colleges. Many of these institutions accept JEE Main scores, and with your category rank, you might find suitable options there. The competition and cutoff ranks in these colleges tend to be lower compared to the top NITs and IIITs.

To get a clearer picture of your chances, it's highly recommended to use JEE Main college predictor tools available online like Careers360. https://engineering.careers360.com/jee-main-college-predictor?icn=jee-main-cp-lp&ici=search-section_c360-home These tools consider your rank, category, and home state to provide a list of potential colleges where you might have a good chance of admission. Additionally, keep an eye on the JoSAA (Joint Seat Allocation Authority) counselling process and the state-level counselling for engineering admissions. During these processes, the actual cutoff ranks for each round and category will be released, giving you a definitive idea of where you can secure a seat. While you might not get into the absolute top-tier colleges, there are definitely engineering colleges, including some NITs, IIITs, and GFTIs, where your rank in the SC category could lead to admission.