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post #1 of (permalink) Old 10-08-2007, 11:04 AM Thread Starter
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need help with decision

okay I am tiried of troubleshooting the 258, I am going to do a v8 swap. Need suggestions on what will be the easiest swap. Motor, tranny, transfer case. I was thinking a diesel 4bt but I started crunching some numbers and well it will come out to be more than I wanna spend. So now I am leaning toward a 5.0 motor.......also what axel setup are people using on these v8 swaps?
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post #2 of (permalink) Old 10-08-2007, 12:06 PM
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This may sound harsh, but since you have had so much trouble with simple starter and ignition problems, and don't seem to be able to follow advice or even answer questions we've asked to HELP YOU, is that really within the realm of possibilty?
It's much more complicated than just "tossing it in."

Your best bet is take it to a shop that can handle it.
They can solve the problems you have now for far less than what it would cost you in just the V8 parts.

Or have them do the swap.
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post #3 of (permalink) Old 10-08-2007, 12:28 PM
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Crazy....what Rich is trying to say is that a v8 swap is quite a bit more complicated than getting the 258 going. I did one two years ago to my CJ7. For me it was not that difficult...biggest issues being mechanical...specifically, engine placement...there is no rock solid data on where to place the's a lot of trial and fit.

Considering the electrical issues you have had, doing the wiring on a fuel injected v8 is going to be several magnitudes more difficult. And if your thinking of going with a carbed v8...then why bother.....

Before you throw in the towel, give this one more try....we are here to help...

It sometimes helps to step back and take a good long look at the whole picture. Why not do another post and summarize what you have done and what the issues are.

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post #4 of (permalink) Old 10-08-2007, 03:19 PM
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Ditto on Rich and John's advice. If you're having troubles with a starter, you'll be in real thick soup trying to do an engine swap. You'll be much better off learning how to deal with the problems in front of you before tackling a swap that will have twenty seven problems as bad or worse, even a 'simple' swap.

An AMC V8 might be easiest because it was an option in the CJs, which also used the 258 and aren't much different from Yjs. But a 258 to a carbureted AMC V8 is almost a sideways move. I'd rather have the six.

EVERYTHING's easy for the guy who doesn't have to do it.
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post #5 of (permalink) Old 10-08-2007, 04:56 PM
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...but if you're a glutton for punishment and still want to do the V8 swap... then go for an AMC 304, 360 or 401. Except for one motor mount, they're a drop in.
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post #6 of (permalink) Old 10-08-2007, 05:01 PM
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Read the above posts several times. Start simple. A V8 swap while not too hard it a hundred times more complicated than your current problems.


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post #7 of (permalink) Old 10-09-2007, 09:57 AM
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Or, just sell the jeep, and take that with the money you'd put into a V8 swap, and buy a new jeep. Fastest path to success.

Good luck

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