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Old 11-20-2010, 09:42 AM
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s10 rear end swap

Has anyone done a 8.8" Ford explorer rear into a 1985 or similar s10 Blazer. I was advised this was possible with a few mods of course(Thanks matt167). If anyone has any info I would love to hear it. Wouldn't want to go into this blind and end up with a mess and it may be something I wouldn't be able to handle on my own or too expensive like finding a 8.5" GM rear for a 2WD. My 2WD Blazer has a 7.5" rear (one wheel peel) and will probably not handle a modified V8 for very long.

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Old 11-20-2010, 09:58 AM
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try looking here
http://www.v8s10.org/forum/viewtopic.php?f=19&t=15522
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Old 11-20-2010, 10:30 AM
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s10 rear end swap

Thanks, I really appreciate the help, found a great article with lots of info and nice pics (pics are good)
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Old 11-20-2010, 02:46 PM
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Lots of info here too. http://www.s10forum.com/forum/transmission-and-rearend/
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Old 11-21-2010, 06:50 AM
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s10 rear end swap

Thanks Big Gear Head, this site has great info also,guess it will all depend on what I can find and at what price. The ford 8.8 appears stronger ,but the GM 8.5 would be the easier swap. I had a GM 8.5 in a 1971 Camaro SS w/4 speed and it took all I dished out so an auto trans shouldn't be as abusive. Thanks again!
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Old 11-21-2010, 09:34 AM
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IIRC might have to shorten the drive shaft with an 8.5. Only 2wd 8.5 I have found came with a truck attached, not worth the $$$. The most commonly found 8.5's (in my experience) come from the zr2 4x4's and are way to wide for a 2wd.
The 8.8's have their own issues as well, wrong bolt pattern, over width, etc.. but are much easier to find. Also hear that the factory posi units are wishy washy at best.
I'm in the same boat, looking to swap rears in a 2wd S10 pickup in the near future (V8 swap of course). Kinda sucks not having traction and being scared to run slicks (mine's an 83, gov bomb and 26 spline axles)
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Old 11-21-2010, 10:13 AM
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s10 rear end swap

< Rhansen Let me know what you do and how it works. Mines an 85 S10 Blazer with a1970 350LT1 and 700r4 not looking to race it but will probably make a pass or two at the strip just to see what I've got !
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Old 11-21-2010, 10:51 AM
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FWIW an explorer 8.8 should be fine for your application. I have a tendency to break things that other guys have no trouble with, might have something to do with my lead foot and running slicks at the track.
My last truck got a 9" with a locker and 31 spline moser axles, just trying to do this one on a tighter budget. Only have $2k into it right now (incl. purchase price of the truck). It's a 350 w/487x heads, comp xe274, and a 700r4. 300-350 hp is all I would expect from it.
Thinking about buying an open diff 8.8 and putting in a lunchbox locker but I'm not sure yet. Last thing I want is to have to rebuild the posi every year (or less) since it's not a DIY project for me. Also nice to have a rear that can handle more motor and/or giggle juice later on.
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Old 11-21-2010, 11:13 AM
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s10 rear end swap

Mine should be in the 350hp range also most of the big bucks are in the eng and trans but the other stuff adds up quickly too. Plan to post some pics later but still need to do the body and paint, plenty of work left, seems it never ends
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Old 11-21-2010, 05:22 PM
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There are many options if you want to build something. I have built 9 inch Fords, car and truck 12 bolts, 8.5 10 bolt and other rear ends to bolt into the S trucks. It cost a little money to do that, but you get something that fits and works. As far as a bolt in the 8.5 is all there is. The 8.8 Explorer rear end has quite a bit of pinion offset, needs a yoke installed and the bolt pattern on the axles is wrong. Many people will cut down the long side and install another short axle in that side to get the pinion in the correct location.
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Old 11-21-2010, 06:26 PM
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s10 rear end swap

Sounding more like the 8.5 is a good choice if one can be found a a reasonable cost. This vehicle is mostly for pleasure not a racer but I would like for it to hold up for an occasional trip to the strip or a burnout or two, just plain old fun! Thanks for all the info an advice! R W
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Old 11-21-2010, 07:00 PM
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Just saw a couple on fleabay, nothing I'm gonna bid on tho.

http://cgi.ebay.com/ebaymotors/8-5-S...item20b53f6d42

http://cgi.ebay.com/ebaymotors/Chevy...item1e5fdc14c5
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Old 11-22-2010, 06:38 PM
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I used a 3.73 geared Ranger 8.8" in my S-10 by narrowing the long-side tube and using a new short-side axle. This negates the pinion offset and gets the width close enough to fit wheels by adjusting the backspacing. My entire setup with narrowed tube, new axle, redrilling axles & drums, new brakes, new spring perches, and new posi parts was less than a grand. I'd go with the Explorer as it's 31 splines. Either is a cheap find in most junkyards...

Russ
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