<p>If you are sure you want to switch to Engineering, you may want to contact admissions about that now. It may still be possible.
If you are not sure, you can still switch to engineering later, but you will probably have fullfill certain freshman requirements (Physics, Math,etc) and then apply to switch. I would contact the Engineering school to find out more details. The freshmen program is on their website:
[Freshman</a> Integrated Curriculum](<a href=“http://www.engineering.pitt.edu/Freshman/Academic/Freshman_Integrated_Curriculum/]Freshman”>http://www.engineering.pitt.edu/Freshman/Academic/Freshman_Integrated_Curriculum/)</p>
<p>If you don’t follow the engineering curriculum from the freshman year on, there is a good chance you will not be able to finish in 4 years.</p>