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Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > 42re to 44re swap

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Unread 10-29-2007, 10:47 AM   #1
angry troll
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1990 YJ Wrangler 
 
Join Date: Oct 2007
Location: newport news va.
Posts: 9
42re to 44re swap

my 94 grand has 207### miles and the 42 is starting to slip. i have an opertunity to get a 44re for real cheap and would like to know if it is do-able. if i could get some info that would be great. thanx, T
i forgot to mention i have an I-6 and was not told what engine was in the other. i do know it was in a 4x4. in that brings up another question.... will the transfercase match? again thanx.


Last edited by angry troll; 10-29-2007 at 11:41 AM..
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Unread 10-29-2007, 11:40 AM   #2
ZJMAN
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Location: St. Albert, Alberta, Canada
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To the best of my knowledge they never put a 44Re behind the 4.0. So you'll have to swap the guts of the 44 into the 42 case. This is a frequent swap and will give you HD components.
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Unread 10-29-2007, 12:19 PM   #3
angry troll
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ok so just use the guts from the 44 and new steels and frictions? what kinda improvement will this be? just trying to figure it out. so is it the bell housing, length, anyting obvious? just trying to do a quick swap to get the jeep going till i get a rebuild kit for the 42. thanx for the info on the HD conversion.
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Unread 10-29-2007, 12:21 PM   #4
CLNinja
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try to get an AW4
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Unread 10-29-2007, 11:57 PM   #5
Sporer65
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With a 94, I would also try to get an AW4. But to answer your question, the 44RE was used behind the V8 in 96-98. So I do not think that the tranny will work. But I have heard of swapping the internals of the 44 into the 42 but I do not any specifics.
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Unread 10-30-2007, 01:59 PM   #6
ZJMAN
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I do know that there are more clutch disks and other internals are heavier on the 44. I'll try to check my shop maual tonight for specifics.
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Unread 10-30-2007, 09:40 PM   #7
ZJMAN
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My shop manual says that the differences are in fact the clutch packs.

Front Clutch:
42RE - 4 discs
44RE - 5 discs

Rear Clutch:
Both trans use 4 discs

Overdrive Clutch disc Usage:
42RE - 3 discs
44RE - 4 discs

Direct Clutch disc usage:
42RE - 6 discs
44RE - 8 discs

All other specs appear to be the same.
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