Engine oil smells gasoline

That's what I suspected happend but I wanted to be sure. The fuel pump is new but not installed by me. The oil smelled gas even when I bought the car so it's probably because of the fuel pump were bad or because of the previous owner couldn't start it and poured gas in the carb like I am doing. I'm going to install a new Demon Street carb 625 cfm and a performer intake does anyone think the 340 stock cam would work great?