ColtonS767

Got a 1986 Lariat XLT F150. It's got a 302 engine fuel injected. I'm wanting to cam it preferably for more power, but still being able to avoid going to the gas station every other day. If that's not possible though, then I still want the power. Will I need to change a lot of other stuff in the engine, or will just the cam be fine? And will I need to chip it? Thanks in advance guys!
-Colton