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  #1  
Old 01-09-2012, 04:12 PM
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Default 3.0 to 4.0 swap

My engine in my 94 ranger with a 3.0 is junk, and i want to put a 4.0 in it..I can buy a 94 with a 4.0 in it and i want to know what i have to swap to do the job..Any help would be great and thanks
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  #2  
Old 01-09-2012, 04:45 PM
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Default Re: 3.0 to 4.0 swap

I think you may have to swap transmissions too, and possibly rear axles.
Not sure if the 94s had computers and stuff, but you may need that too..
Will probably have to re-do/fab some mounts and stuff..
If it's too much work, your probably best off just putting in another 3.0

When my 3.0 motor died in my 99 ranger, i was tempted to put in the 4.0, but i was young and still learning, and was told by the mechanic, it would be alot more work, and cost about another 2500 extra.
But now I have more experience working on motors and pulling them out, that I may consider putting in a 4.0 if my 3.0 dies... right now i only have about 50K on it, so it had better last me a long while lol.

Good luck man
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  #3  
Old 01-09-2012, 09:38 PM
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Default Re: 3.0 to 4.0 swap

Yea too much work, its 100% different then the 3.0. You need a 4.0 tranny, and 8.8" rear axle I believe? Then if its 4x4, theres more work there.You'll need to change wiring harness, and just a bunch of little annoying stuff. Its just a big headache to even plan on a 4.0 swap. Its easier to just put a 3.0 in, sell the truck, and buy a 4.0, because you will need a TON of hours to change it all, and buy another tranny, drive shaft, 4x4 stuff if you have it, wiring, tubing,etc.

Its cheaper to replace 3.0, sell it, buy 4.0. Or just replace the 3.0 and keep it for even bigger savings.
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  #4  
Old 01-09-2012, 09:52 PM
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Default Re: 3.0 to 4.0 swap

wiring harness, computer, trans, and motor will be needed. same year would be best. rear axle can stay, trans has to be the same (auto/manual)
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  #5  
Old 01-10-2012, 04:20 PM
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Default Re: 3.0 to 4.0 swap

Thanks guys! Now what year 3.0's will fit in my 94?
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  #6  
Old 01-10-2012, 04:50 PM
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Default Re: 3.0 to 4.0 swap

I would get a close year, like 93 or 95 maybe
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  #7  
Old 01-10-2012, 05:14 PM
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Default Re: 3.0 to 4.0 swap

for smog, get same year or newer. 94-97
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  #8  
Old 01-10-2012, 10:36 PM
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Default Re: 3.0 to 4.0 swap

Wouldn't the computer need to be from a pre 95 since thats the year they went from a distributor to a coil pack? So I would look for a 93 or 94 computer. Unless your new motor comes with a coil pack.
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