Been lurking here for a LOOOONG time. But I finally got another Jeep. Well, should say got my WIFE another Jeep (Christmas present). She's been bugging me for years since we got rid of our '74 CJ5 back in '95.
So I picked up a little '88YJ. It's bone stock with the 258/904/231. Now it does run a little rough as it has 2 cylinders with low compression, but it does run and runs rather well after it warms up. It's black on black with hard, soft and bikini tops, and almost brand new 30x9.5x15 BFG's X5. The only aftermarket add on is a rather nice Kenwood (I think) stereo. It even has the ORIGINAL jack under the hood! Best of all was the price. I figured I couldn't go wrong for $700!!!
Now for the meat of my post. Since the engine will need a rebuild at some point in the near future, I was thinking of just going ahead and swapping in a V8. What I want to put in there is a Dodge 5.2/46RH/231 combo. The biggest concern I have is with the tranny length. Is this doable without doing a WB stretch? Or should I just go with a 350/700R4/231?
Thanks guys. And it's good to be able to actually post on here instead of looking at everyone else's rides and dream.
I have the straight six......I like V8 power but that six I have was rebuilt by the PO....I added a motorcraft carb....ford TFI....runs great...got about 30k on the engine since rebuild. I have the 4.10 gears in it now.....she'll climb a wall in 4wheel lo......
Only thing I want to do is add the TBI injection kit....
Plus you have an automatic......easy on the left knee when wheelin....
Anyway......enjoy your new ride!!
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Yeah, I built my 258 as well. I added an offy intake, holley TA 470 4 barrel, comp cam, rollor rockers, hipo pistons, header, ported head, DUI, and MSD. It runs like a small V-8 and didn't have to screw around with trannies, motor mounts and other engine swap pains. The 258 can also be fuel injected if you perfer and swap on a 4.0 head.
1987 wrangler, 258 I-6, 5-speed.
2007 liberty sport 4X4, automatic
2009 ford ranger 4x4 FX4 OFF/ROAD, 5-speed
Right around 15mpg on the highway(2 lane).But I'm easy on the skinny pedal and I run 4.10 gears.I run the speed limit but nothing to crazy.I don't use as my D.D.Just for getting to the trail or downtown or to the club meetings.(usaly about 40 miles one way.)Our weekend rides consist of 100-200 miles on Sat.99%dirt
My house and family are protected by God and smith&wesson,bother either and you'll meet both.
First thing I have to say is that you Stole that jeep at $700. My first one was an 83 Cj that had not a floor left in it and I gave $800 for it 'cause the frame was solid and it ran.
I have a '91 Yj now with the Auto (TF999) but with the 4.0L, and with having the Cj with the 100k plus mileage 258 and to having the comparable mileage 4.0L I would go with the 4.0L as the simplest swap.
My best friends 88 Yj threw a rod in his 258 that was also rode hard and he swapped in a 4.0L HO long block out of a Zj or Grand Cherokee and it was night and day with power and fuel mileage although we kept the Motorcraft Carb and the stock intake ( this took two people to get the ports and bolts all lined up but it sealed.)
So for an ending I would say if you have the Money to sink into an expensive machine shop rebuild of boring and decking the engine, probably around $1000, then by all means have a newer engine. I don't think the overdrive trans like AW4 work as an easy swap because they are too long for the WB. But a Junkyard lowest mileage 4.0L high output for $400 is very doable in a day.