[Grey4.0L]

If what i read is true.. The Chevy 2.8L V6 shares the same transmission as the 2.5L 4 cylinder jeep engine? Would it be possible to swap in the 2.8 engine into my Jeep? Is it worth it?

[88XJSport]

Im not sure, but if it is possible, why not put a 3.4 out of a camaro into your jeep? The 2.8 and the 3.4 are the same block.

[kg4kzv]

I,m not sure about having the same transmission bolt pattern but I have a 86 in the back yard with a factory 2.8 and had a 5-speed and it now has the auto tranny and t-case out of a blazer but due to differences in the t-case the front drive line was not hooked up. I think a 4.2 inline jeep motor might work better for your swap It is still carbed so no computer to deal with. If you are really wanting a 2.8-3.4 v6 you could get swap parts from the junk yard out of a factory equipped 2.8 Cherokee.

Chris

[LEAD_NOT_FOLLOW]

Do the 3.4L swap. It's pritty straight forward. We had it swapped in and running in less than a day in my MJ.

[MPETESS10]

the 2.8 and 2.5 GM iron duke 4 cyl share the same trans bolt pattern
as for the jeep 2.5 I highly doubt it shares the same pattern but anything is possible
and I have to agree if you find out this is a bolt in swap for you I wouldnt use the 2.8 its just not a great swap candidate
even the fuel injected versions only had 125 hp and 150 lb/ft
if ur just lookin for more hp I would just build the 4 cyl up
but if your lookin to swap in a V6 for the trouble involved I would step up to a larger displacement version of the 60* GM V6
the 3.1 out of a 89-92 camaro/firbird would probably be a cheaper option than the 3.4 and more plentiful in the junkyards too
the 3.1 is rated at around 140-150hp and I think TQ is somewhere around 190-200 or so

if you want the 3.4 the only vehicles to look for is a 93-95-1/2 V6 camaro
they are rated at 160 HP and torque is above 200 lb/ft but I am unsure of the exact #'s

good luck in your search and let us know if you find out whether the jeep motor uses the GM bell housing bolt pattern

[Klutch]

I don't think swapping in a 2.8L V6 would be worth the time, effort or expense. I have an '86 Comanche with a 2.8L V6. In my opinion, it's among the worst engines ever made in the USA. If I didn't know better, I'd swear it was a Communist product. If properly tuned, they'll move your Jeep along, but nothing more.

I don't have any experience with the 3.4, but it's gotta be better than the 2.8.

[severous01]

yeah...any of the 3.x engines will fit.

3.1, 3.4, 3.5, 3.8, 3.8 sc, 3.8 turbo GN cars and turbo TA cars...and turbo vette).

be sure to grab the ECM/wire harness for whatever engine you get. and grab the accessories and if you want the tranny (out of any of the RWD units any way). you may need a transfer case adapter with the tranny but it's more stout than what you have and parts are easier to find and cheaper.

i'm thinking about doing a 3.4 or 3.8sc swap into mine. i have a 4l60 and a 700r4 sitting here and dont know what to do with either of them...so i may as well buy a engine to put in the jeep.

[balloo93]

Isn't the 86 2.5L EFI anyway? Swapping in a 2.8L carb'd engine would be a step backwards. The little 4cyc has more power and would be more reliable.

But as mentioned, the 3.4L chebbie would be the better swap.

[Grey4.0L]

the 2.5 isent fuel injected until early 90's i believe. Mine has throttle body injection which really isent too great.. well i guess its basically fuel injected but only has one injector.

Im gonna do a compression test on it soon, with 250,000 kms what kinda numbers can i expect? When would it be due for a rebuild ?