@party123, Cal Poly caps the GPA at 4.2. You can find their calculator on the internet. The AVERAGE GPA in the College of Engineering is 4.16 under the capped system. The AVERAGE SAT is 1467.
So basically, the AVERAGE Engineering student at Cal Poly is an EXCELLENT student. Your stats say that you are an excellent student, so you obviously have a chance. Good luck to you.
Check out the general stats here:
https://admissions.calpoly.edu/prospective/profile.html