xj efi v8

thicky · Jan 31, 2010

i have a 86 throttle body 2.5 4 speed cherokee. i lifted it and put 33"s on it and no big suprise i got no power. a guy down the road has a gm 350 throttle body 5 speed and tcase for 350$. what i am wondering is has anyone tried to use the factory 2.5 wiring harness to run a v8. lookin at it the plugins on the 350 looks the same. i know the 2.5 was built by gm and there only 3 years apart.so if anyone has tried this i could use some info. i think a efi 350 would be sweet in my xj. i know i can convert it to a carb but they always cut out goin up hill and the 350 has all the efi parts and sensors with it. thanks in advance for any help :cheers:

FlexdXJ · Jan 31, 2010

thicky said:
i have a 86 throttle body 2.5 4 speed cherokee. i lifted it and put 33"s on it and no big suprise i got no power. a guy down the road has a gm 350 throttle body 5 speed and tcase for 350$. what i am wondering is has anyone tried to use the factory 2.5 wiring harness to run a v8. lookin at it the plugins on the 350 looks the same. i know the 2.5 was built by gm and there only 3 years apart.so if anyone has tried this i could use some info. i think a efi 350 would be sweet in my xj. i know i can convert it to a carb but they always cut out goin up hill and the 350 has all the efi parts and sensors with it. thanks in advance for any help :cheers:

I thought 86's were carbed?

Can someone move this to the proper forum? This isn't quite OEM tech.

cruiser54 · Jan 31, 2010

86 was first year of throttle body, when the Comanche came out.

FlexdXJ · Jan 31, 2010

Oh didn't know that!

RedZeppelinXJ · Feb 1, 2010

do you have the 2.5L I4 or the 2.8L V6? ik the 2.8 was GM made but i am pretty sure the 2.5 is an AMC built motor

thicky · Feb 1, 2010

its the 2.5 i was told it was made by gm and it was the same as the s10 motor

BenDiesel · Feb 1, 2010

them 2.5 is basicly the iron duke bored and stroke. the easy way to do it would be to sell it and get a 88 + with a 4.0

TheSandman · Feb 1, 2010

There's a guy on here I think that has a XJ with a 5.3 in his. Looks pretty sweet, think there's youtube vid too.

EDIT:

Found it

http://www.youtube.com/watch?v=bL_ZRBEQIrM

cruiser54 · Feb 1, 2010

Hey guys, I hate to burst your bubble, but the 2.46L engine was AMC. It incorporated some design features which actually carried over to the 4.0. CJs had the iron duke , but not XJs.

Ghost · Feb 1, 2010

cruiser54 said:
Hey guys, I hate to burst your bubble, but the 2.46L engine was AMC. It incorporated some design features which actually carried over to the 4.0. CJs had the iron duke , but not XJs.

This is correct. 86 was the first year for the 2.5L to get TBI, 91 was the first year to get MPI.

Johnnie Walker · Feb 1, 2010

For a TBI 350, it should be easy enough to set up. Most likely you will need the matching computer for the 350.

thicky · Feb 2, 2010

thanks guys 4 all the info. im gona try it. if it dont work i guess ill just put a carb on it later.

xj efi v8

thicky

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FlexdXJ

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cruiser54

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FlexdXJ

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RedZeppelinXJ

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thicky

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BenDiesel

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TheSandman

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cruiser54

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Ghost

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Johnnie Walker

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thicky

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