Dear Pavan, 

The previous year cut off for GMR Institute of Technology, Rajam for BC-A boys in mechanical stream is around 23000.hence there might be difficulty securing seat there. However the college has got good reputation due to quality teaching  

Coming to CR reddy college, the previous year cut off is around 1,25,000 which denotes that you have great chances to secure seat here. This college is standing in good position with ratings due to great teaching and extracurricular activities. 

Hope this helps. 

All the best.