This phase II trial studies how well combination chemotherapy works in treating patients with pancreatic cancer before undergoing surgery. Drugs used in chemotherapy, such as irinotecan hydrochloride, oxaliplatin, leucovorin calcium, and fluorouracil (FOLFIRINOX), work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving more than one drug (combination chemotherapy) before surgery may make the tumor smaller and reduce the amount of normal tissue that needs to be removed.