It's not a radical change in displacement, mainly a boost in compression, but I'm not looking for big power gains. Decided if I'm going to rebuild it I may as well stroke it and the mini strokers can use all off the shelf parts and avoid custom pistons/rods/grinds/tuning issues etc. Wasn't happy with the machine shop work on my original head, said screw it and stuck the edelbrock head on it. What's your setup?
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258 crank from an 84 cj, 7120 head, hand ported, 1.94/1.5 chevy valves, I needed to grind the crank so I had it offset ground to increase the stroke so I didn't have to shave the block anymore than necessary, crane 753901 cam and lifters, stock rockers, H802CP .030 pistons, bore and stroke is square. 2000 intake, $90 ebay chinese header, 62mm throttle body, Hesco fuel pressure regulator, Mustang 27# injectors, block was shaved about .006, pistons were polished and I had them CNC machined to lower the compression.
My biggest problems were running lean and having a shitty radiator so it runs hotter than I like in the summer. It was a solid build in 2005-2006, still runs strong, but I just dont drive it enough, milage with the 4.0 was 14 mpg, with the stroker I was able to get 16. I am running 4.11 gears on 33's with the 32RH transmission. I want to put a similar combination into my LJ, just need to sell a kidney to pay for it...anyone need a kidney, it only produces a few stones a year.
My biggest problems were running lean and having a shitty radiator so it runs hotter than I like in the summer. It was a solid build in 2005-2006, still runs strong, but I just dont drive it enough, milage with the 4.0 was 14 mpg, with the stroker I was able to get 16. I am running 4.11 gears on 33's with the 32RH transmission. I want to put a similar combination into my LJ, just need to sell a kidney to pay for it...anyone need a kidney, it only produces a few stones a year.
Yea that's alot more custom parts than I was willing to deal with. Hoping mine runs ok too. I've got the same tire/gear/transmission setup as you.
I was experimenting, the combinations are easier now. Now it is just a grind the crank, shave the block, bore it and assemble. Pistons are real simple. I built mine on the cheap up until I started to swap to chevy valves, which was a super big mistake. If I was to do it again, i will run 5.7 hemi valves, they are bigger but dont require special valve springs, guides, retainers and locks. It is really only a couple of hundred more than a stock rebuild and about 60 hp over stock.