2.9 to 4.0 sawp help request

namless_truble · Oct 21, 2011

doing a 2.9 to 4.0 swap i know its a direct swap except the wire harness has anyone done one to point me in the right direction with the harness splice?

f6boomer · Oct 21, 2011

Search

Search this site. Read everything in Tech section and search threads. There is an engine swap thread lower down than Exp/BII thread, lots of questions already answered.
Once you have done that there are Many fine people here who will answer specific questions.
What year "from" and what year "to" are big factors along with trans options.

Good luck

unoleisu · Oct 21, 2011

Don't forget to ducument what you are doing, and post details! (pics, ect) Anything you have to do that was different will help the next guy! I am planning to do the same swap, and am particularly interested.

namless_truble · Oct 21, 2011

4.0 is from 92 explorer going in an 86 bII. thank you for your responses. i will take pics and notes hoping to get started on this next weekend picking up the donor truck this one.

trail B2 · Oct 21, 2011

92 explorer is a good one the first question is to change dashes or not.I did a 93 ranger yours is better.

namless_truble · Oct 27, 2011

i have the whole truck at my disposal except body panels and rearend should i swap the dash?

unoleisu · Oct 27, 2011

I have a concern with mine that if I swap the dash, then I can no longer use the existing fuel gage. Since my BII's dash is nicer thean my Exp's, I'm looking more towards just modifying the harness. My second concern is what to do with the 4.0 harness computer, which will not go where the BII's is now.
It's more about function over form for me. I need all working components, and not so concerned with appearances.

slow96gt · Oct 27, 2011

I got my fuel gauge to work with the exp dash just a 1/4 tank ment empty lol

unoleisu · Oct 28, 2011

slow96gt said:
I got my fuel gauge to work with the exp dash just a 1/4 tank ment empty lol

I guess that could work, if you don't forget, or let your wife drive it. Then again a dipstick could be installed too.
I kinda like my working gauges. :icon_surprised:

Peterbilt · Nov 3, 2011

I did an 84 2.8 to 4.0 swap in my B2 the dash looks good but you need to cut a larger hole in the firewall for the other colum and one for the round bulkhead plug. But seeing as you have the whole explorer i would go with all the factory explorer wiring it takes a longer to do if you want it dont right. Its not a weekend swap really lots of fiddling around but in the end its worth the effort if you take a look at my project dirty white boy you will see ur alot better off your starting with a 2.9 and the factory explorer computer should be able to mount of the pass side kick pannel just use the explorer bracket to mount it.

2.9 to 4.0 sawp help request

namless_truble

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f6boomer

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unoleisu

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namless_truble

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trail B2

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namless_truble

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unoleisu

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slow96gt

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unoleisu

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Peterbilt

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