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Old 06-20-2009, 07:40 PM   #1
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Explorer 8.8 Rear end swap

I am looking to swap in an 8.8" as part of my LT1 project. I was wondering if there were any common problems that occur? I have read that the rear is slightly narrower and was wondering about the alignment? It has 4.10" gears and disc brakes so I wont have to change the gears. I was also wondering about the master cylinder if it had to be changed? Thanks.

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Old 06-20-2009, 10:51 PM   #2
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as long as you are useing aftermarket wheels you should be fine and as for the master cly i just used the stock jeep one and had no trouble

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Old 06-21-2009, 08:38 AM   #3
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why do you say aftermarket wheels? Ths bolt pattern is the same, is it the depth of the wheels?
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'93 Wrangler YJ LT1/4L60E (built up with corvette servo) MORE bomb proof weld in motor mounts, 241C Transfer Case, High Angle Drive line SYE, 8.8" explorer rear, SOA, anti-wrap perches, jks discos, MORE front shock hoops and rear shock extension, MORE steering conversion stage 2, MORE anti wrap ladder bar

'07 4-DOOR JK unlimitedX BFG Tires and JL audio system Rigid Class IV 3500lbs hitch receiver

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Old 06-21-2009, 08:59 AM   #4
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I also had another question a little off topic. Which Dana 44 front axles are most people running/out of which vehicles? Looking for the best match for my 8.8, thanks.
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'93 Wrangler YJ LT1/4L60E (built up with corvette servo) MORE bomb proof weld in motor mounts, 241C Transfer Case, High Angle Drive line SYE, 8.8" explorer rear, SOA, anti-wrap perches, jks discos, MORE front shock hoops and rear shock extension, MORE steering conversion stage 2, MORE anti wrap ladder bar

'07 4-DOOR JK unlimitedX BFG Tires and JL audio system Rigid Class IV 3500lbs hitch receiver

'98 Chevy S-10 Lowered 5/6"- SOLD

'04 Subaru Imprezza

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Old 06-21-2009, 01:40 PM   #5
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Quote:
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why do you say aftermarket wheels? Ths bolt pattern is the same, is it the depth of the wheels?
as long as the wheels have less backspacing then stock
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Old 06-21-2009, 05:02 PM   #6
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the d35 pumpkin is offset a little bit did you have any problems with that
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'93 Wrangler YJ LT1/4L60E (built up with corvette servo) MORE bomb proof weld in motor mounts, 241C Transfer Case, High Angle Drive line SYE, 8.8" explorer rear, SOA, anti-wrap perches, jks discos, MORE front shock hoops and rear shock extension, MORE steering conversion stage 2, MORE anti wrap ladder bar

'07 4-DOOR JK unlimitedX BFG Tires and JL audio system Rigid Class IV 3500lbs hitch receiver

'98 Chevy S-10 Lowered 5/6"- SOLD

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Old 06-21-2009, 06:19 PM   #7
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no i had mine set up with 3.5 lift springs and i used the stock drive shaft and all
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Old 06-21-2009, 06:45 PM   #8
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did you have any problems getting it aligned?
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'98 Chevy S-10 Lowered 5/6"- SOLD

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Old 06-21-2009, 07:36 PM   #9
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did you have any problems getting it aligned?
no i used the m.o.r.e. 8.8 kit and i had no problems it drove fine on the street
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Old 06-21-2009, 08:30 PM   #10
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ok this looks like a good kit ill prob use it for the rear, which wheels did you use? Did you use any lockers or anything? Any other tips for the swap?
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'07 4-DOOR JK unlimitedX BFG Tires and JL audio system Rigid Class IV 3500lbs hitch receiver

'98 Chevy S-10 Lowered 5/6"- SOLD

'04 Subaru Imprezza

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Old 06-21-2009, 09:20 PM   #11
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i ran steel 15/8 steel wheels from jegs i ran 38/12.5/15 tsl no locker stock lim slip with 4.10s
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Old 06-21-2009, 10:23 PM   #12
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what kind of back spacing?
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'07 4-DOOR JK unlimitedX BFG Tires and JL audio system Rigid Class IV 3500lbs hitch receiver

'98 Chevy S-10 Lowered 5/6"- SOLD

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Old 06-21-2009, 11:33 PM   #13
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i want to say 4" but not shore
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Old 06-22-2009, 02:48 PM   #14
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8.8 is a great swap, yuo gunna be happy
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Old 06-22-2009, 06:23 PM   #15
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There's nothing on a YJ that is going to affect your alignment. As long as you weld on the spring perches straight you'll be fine. The 8.8's pumpkin is a bit more offset but nothing that will affect your drive line angles.

The stock wheels are about 5.5" of backspacing so the 1/2" narrower for the 8.8 might give you problems.

I do know a guy that has a TJ front 44 with no brackets on it (including the upper control arm). I know he wants to sell it, but don't know if it'd be worth it to have it shipped from AZ to WV.
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Old 06-22-2009, 06:40 PM   #16
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Well i know you cant align the front but i was wondering with the narrower axle if the machines could read. I was thinking about get longer wheel studs and spacers. I wanna run 33"s should I get 15x8 istead of 15x10? Cause it looks like the backspacing would work.
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'07 4-DOOR JK unlimitedX BFG Tires and JL audio system Rigid Class IV 3500lbs hitch receiver

'98 Chevy S-10 Lowered 5/6"- SOLD

'04 Subaru Imprezza

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Old 06-22-2009, 07:00 PM   #17
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Quote:
Originally Posted by Jman062006 View Post
Well i know you cant align the front but i was wondering with the narrower axle if the machines could read. I was thinking about get longer wheel studs and spacers. I wanna run 33"s should I get 15x8 istead of 15x10? Cause it looks like the backspacing would work.
Considering that the 8.8 is only a rear axle and you have leaf springs there is absolutely not alignment that can be done in the rear.

Honestly it's only a 1/4" on each side so don't worry about the width of the axle. If you get wheels with 3.75" of backspacing you won't even notice the different. It's actually good for the front to be a tad wider than the rear. Helps the rig track better.
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Old 06-22-2009, 08:39 PM   #18
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i ran steel 15/8 steel wheels from jegs i ran 38/12.5/15 tsl no locker stock lim slip with 4.10s
understandable, the reason why I asked about the wheels is because he mentioned he ran 15x8 w/ 38"s. I wanted to run 33/12.50 and I thought 12.5 and wider you were supposed to have 10"wide wheels is this not true?
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'93 Wrangler YJ LT1/4L60E (built up with corvette servo) MORE bomb proof weld in motor mounts, 241C Transfer Case, High Angle Drive line SYE, 8.8" explorer rear, SOA, anti-wrap perches, jks discos, MORE front shock hoops and rear shock extension, MORE steering conversion stage 2, MORE anti wrap ladder bar

'07 4-DOOR JK unlimitedX BFG Tires and JL audio system Rigid Class IV 3500lbs hitch receiver

'98 Chevy S-10 Lowered 5/6"- SOLD

'04 Subaru Imprezza

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Old 06-23-2009, 08:17 AM   #19
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check this link out:
Ford 8.8 Axle in YJ
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Old 06-23-2009, 10:17 PM   #20
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so that the 8.8 is disc and not drum will the master cylinder or any lines have to be changed in the yj? i am thinking of doing this swap and oh yeah would you have to match the spline count
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Old 06-23-2009, 11:13 PM   #21
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stock MC is working fine for me with 8.8 discs.
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Old 06-24-2009, 05:40 AM   #22
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so that the 8.8 is disc and not drum will the master cylinder or any lines have to be changed in the yj? i am thinking of doing this swap and oh yeah would you have to match the spline count
Match what spline count? The 8.8 is an easy almost bolt in swap. There are no alignment issues when usingf it and the backspacing can be the standard jeep backspacing with no ill effects.

Your master cylinder should be fine with discs or drums as that m/c pushes about the same amount of fluid as the ford m/c. You will have to plumb in the lines and if using discs you will have to get two rubber lines for the ends at the calipers.

You can get spacers if you want to even out the wms but it is not necessary as most vehicles are already smaller on the back axle for tracking purposes anyway.
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Old 06-24-2009, 05:42 AM   #23
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I also had another question a little off topic. Which Dana 44 front axles are most people running/out of which vehicles? Looking for the best match for my 8.8, thanks.
Most dana 44's will have a different wheel pattern but I think one from a waggy will work. Do a google search or go to Naxja, I know I have seen it on thier forums several times.
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Old 06-24-2009, 03:53 PM   #24
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I am getting the axle tomarrow. Now my only worry left is getting vibes from the offset driveshaft. Anyone get these and how bad?
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'07 4-DOOR JK unlimitedX BFG Tires and JL audio system Rigid Class IV 3500lbs hitch receiver

'98 Chevy S-10 Lowered 5/6"- SOLD

'04 Subaru Imprezza

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Old 06-24-2009, 05:47 PM   #25
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Most axles are offset from the factory, there is no need to wory about the vibes i doubt you will have them from the offset.
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Old 06-24-2009, 07:33 PM   #26
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hopefully I dont get any. I appreciate everyones help. I was gonna do the shock extensions as mentioned in the link should I just run the factory shock length? And I was wonder what shock would be good for the front w/soa.
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'93 Wrangler YJ LT1/4L60E (built up with corvette servo) MORE bomb proof weld in motor mounts, 241C Transfer Case, High Angle Drive line SYE, 8.8" explorer rear, SOA, anti-wrap perches, jks discos, MORE front shock hoops and rear shock extension, MORE steering conversion stage 2, MORE anti wrap ladder bar

'07 4-DOOR JK unlimitedX BFG Tires and JL audio system Rigid Class IV 3500lbs hitch receiver

'98 Chevy S-10 Lowered 5/6"- SOLD

'04 Subaru Imprezza

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Old 06-24-2009, 08:01 PM   #27
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Would I cause any problems by mig welding the axles tubes or brackets?
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'93 Wrangler YJ LT1/4L60E (built up with corvette servo) MORE bomb proof weld in motor mounts, 241C Transfer Case, High Angle Drive line SYE, 8.8" explorer rear, SOA, anti-wrap perches, jks discos, MORE front shock hoops and rear shock extension, MORE steering conversion stage 2, MORE anti wrap ladder bar

'07 4-DOOR JK unlimitedX BFG Tires and JL audio system Rigid Class IV 3500lbs hitch receiver

'98 Chevy S-10 Lowered 5/6"- SOLD

'04 Subaru Imprezza

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Old 06-24-2009, 08:40 PM   #28
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just a question. full width or narrow? for full do a 14bol full float rear and a dana44 hp front out of late 70's ford.

narrow get the 8.8 and a dana 44 out of a waggy.
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Old 06-26-2009, 04:56 PM   #29
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what pinionangler are most of you running? I havent seen a number yet so I hope no one is just eyeballing it.
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'93 Wrangler YJ LT1/4L60E (built up with corvette servo) MORE bomb proof weld in motor mounts, 241C Transfer Case, High Angle Drive line SYE, 8.8" explorer rear, SOA, anti-wrap perches, jks discos, MORE front shock hoops and rear shock extension, MORE steering conversion stage 2, MORE anti wrap ladder bar

'07 4-DOOR JK unlimitedX BFG Tires and JL audio system Rigid Class IV 3500lbs hitch receiver

'98 Chevy S-10 Lowered 5/6"- SOLD

'04 Subaru Imprezza

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Old 06-26-2009, 05:42 PM   #30
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i pointed mine just a hair south of straight at the tcase yoke.

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