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General Forums => The Mess Hall => Topic started by: jimwaddell on June 13, 2006, 10:23:07 PM

Title: 258 to a 2.5l cherokee
Post by: jimwaddell on June 13, 2006, 10:23:07 PM

i have a fried 2.5l and would like to know if anyone has installed 4.2 AMC Eagle 1988 in place of the 2.5..  the 4.2 is carbed the 2.5 is tbfi.  what are the issues with the computer, motor mounts, exaust ect. thanks for info...

Title: 258 to a 2.5l cherokee
Post by: mj_lover on June 14, 2006, 05:44:33 AM

why are you wanting 4.2L instead of 4.0L? just curious, other then that, might want to look into a donor vehicle with the 4.2L proper tranny, t-case and misc gizmo's you need to finish the swap.

edit. just read it was in a xj, xj's never came with a 4.2L, so no dice on a donor..

Title: 258 to a 2.5l cherokee
Post by: Jeffy on June 14, 2006, 11:46:56 AM

He wasn't to use a 258 out of a AMC Eagle not a XJ.  Then put it into his XJ.  The question would be what year XJ.  From what I remember Early XJ's have a smaller engine compartment then later ones.  This is what they prefer to just go wih a GM3.4L.  Not to mention it's practically bolt-on.  Although in 1987 (through 1989) the Renix 4.0L was introduced.  This was a better engine then the 4.2L even though it wasn't high output like the +1991 4.0L.