Join Date: Oct 2001
Thanked 0 Times in 0 Posts
4.0 vs 258 w/4.0 head
I'm trying to figure out what I'm going to do with my 85 CJ7. It has a fairly peppy 258 in it that we just dropped a motorcraft 2100 on. Down the road however, I'm going to want more power. I've checked the local junkyards, but none of them have a 4.0 head and fuel injection that I can get to drop on the 258. However they DO have a complete 4.0 with the fuel injection and computer for $800 (I didn't ask the exact year, but I had asked for any 4.0 1994 or newer). If I decide to bite the big one and buy the engine, what will give me more power? Dropping the 4.0 straight in, or taking the 4.0 head and MPI and putting it on the 258?
Also, how difficult is the 4.6L stroker mod?