Engine Swapping in a 304 to AMC 2.5 ? B bigmikeysr Jeeper Posts 1 Thanks 0 Location New Lenox, IL, USA Vehicle(s) 1986 cj7 Yesterday at 11:07 PM #1 I have A 78 CJ7 with a AMC 304 . I want to swap into a 85 w/ amc 2.5. What will it take?