From what I have read this is what you will need to do: change wiring, change tranny, which is longer than the 4cyl tranny so it messes the rear driveshaft angle so the rear axle will need to be rotated, and then you will need new driveshafts. So it really is nto just a simple…
Read the full replyHi again,
I am looking at some really clean YJ's whose only shortcomings are their 4 cyl powerplants. Are there any differences in the rest of the powertrain from a 4 to a 6 cyl. Jeep? Any suspension differences? I guess basically what I am asking is, if I buy the beautiful little Jeep with the 4 banger, can I drop in a new 6 cyl motor later without having to change tranny's, springs, etc.?
Thanks, Dan Hoskin
t-case, too. # of input splines are different.
Carl
Just buy one with a 6 banger you will be money a head, happier going up hills, going off road. It is sort of buying laundry soap with out having a washing machine.
Coasty
Just buy one with a 6 banger you will be money a head, happier going up hills, going off road. It is sort of buying laundry soap with out having a washing machine.
Coasty
Why not put a V6 in there and keep a shorter transmission?
Bret Ludwig did pass the time by typing:
I'd suspect the tranny won't hold up well. Probably won't bolt up either without some interesting adapter work. That and the ratios are designed around the 4.
I have read that the AMC I-4 sports the same bell housing pattern as the GM V-6 2.8 litre family. Starter location may be a problem, but you should be able to bolt up a V-6, if you are clever enough. The larger 4.3 litre V-6 will not fit, as it shares the same pattern as the GM V-8s and the old inline 6.
The 4 cylindre transmission should be able to handle a small V-6 engine, but when you count up the work needed and the anticipated performance gain, it may not be worth it. On the other hand, if you needed a replacement I-4, it might be hard to find and/or expensive. If you had an appropriate V-6 and all the accessories at hand, then this might be a worthwhile swap. It is amazing what people will do, to make use of marginally appropriate spare parts.
Earle
A six it is then..... Thanks, Dan Hoskin
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