WTB 2WD 8.5 3.42 axle

s106banger

s106banger

New member
thought i would throw up a wtb ad over here, theres a couple local guys on this site. im looking for a 2wd 8.5 rearend (54.5") for my truck. locally would be preferred, willing to drive some to pick it up. im in northern ohio. willing to spend some money based on what the rear end is, miles-type of carrier-ect.

shoot me a pm! thanks!

might also be interested in a 3.08 setup as well.
 
S

SuicideSy

New member
Re: WTB 2WD 8.5 3.42 axle

Just sold a 3.08 8.5 locally last week. I find them every month or two. PM if you are interested in one from Fl.
 
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bigmileage

Member
Re: WTB 2WD 8.5 3.42 axle

The only 8.5 made in an S10 was a ZR2 and it's 2" wider than your stocker. You'll need to run front Syty wheels on the rear. All other rear diffs were 7.5 and 7.625. The ZR2 will bolt right in.
 
warmpancakes

warmpancakes

New member
Re: WTB 2WD 8.5 3.42 axle

bigmileage said:
The only 8.5 made in an S10 was a ZR2 and it's 2" wider than your stocker. You'll need to run front Syty wheels on the rear. All other rear diffs were 7.5 and 7.625. The ZR2 will bolt right in.
Click to expand...

wrong, the 8.5 was offered in 2wd 4x4 and zr2 trucks
 
canadian

canadian

sy in progress
Re: WTB 2WD 8.5 3.42 axle

What is the distance between wheel mounting surfaces on a stock SyTy?
 
fivetodrive

fivetodrive

CRISPY
Re: WTB 2WD 8.5 3.42 axle

canadian said:
What is the distance between wheel mounting surfaces on a stock SyTy?
Click to expand...

ZR2 is 63"
Stock is 59"
2WD is 54.5"

bigmileage said:
The only 8.5 made in an S10 was a ZR2 and it's 2" wider than your stocker. You'll need to run front Syty wheels on the rear. All other rear diffs were 7.5 and 7.625. The ZR2 will bolt right in.
Click to expand...

This has been covered many times. There are 8.5's found all the time. Most often I find the 4x4 ZR2. Kinda sucky cause of the width... The only 59" 8.5's are found in 4.3 4x4 5 speed 2nd gen s-10's. I found them most often in 2 door blazers. Have found one in over 2 years though... But s-10 planet seems to have one all the time...

You are also wrong about the width of the zr2 rear. It is 63" vs the 59" of our stocker. It is 4" wider not 2".

It is 2" on each side. If it was only 2" wider I would have been pulling them all the time because it would be nice to be able to use 4 fronts and rotate tires! But alas no such luck....
 
warmpancakes

warmpancakes

New member
Re: WTB 2WD 8.5 3.42 axle

fivetodrive said:
The only 59" 8.5's are found in 4.3 4x4 5 speed 2nd gen s-10's. I found them most often in 2 door blazers. Have found one in over 2 years though... But s-10 planet seems to have one all the time...

....
Click to expand...

I have been looking for years for one local, never any luck stoped checking for about 5 months and one poped up local and BMFB grabbed it :rant:
 
s106banger

s106banger

New member
Re: WTB 2WD 8.5 3.42 axle

8.5 was offered in 3.08, only in 2wd though.

im trying to find one locally, or within the state. im willing to drive to get one.

eventually ill begin just taking trips to the local pull a part looking every weekend until i find one.
 
sparkwire

sparkwire

Donating Member
Re: WTB 2WD 8.5 3.42 axle

try JD REAREND in Ritchfeild, Ohio, 330-990-8155, 330-659=7117, he can build a rearend for you.
 
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bigmileage

Member
Re: WTB 2WD 8.5 3.42 axle

warmpancakes said:
wrong, the 8.5 was offered in 2wd 4x4 and zr2 trucks
Click to expand...

No you are wrong, sorry. It's a complete myth that they ever came in anything but a ZR2. There was an iron front diff in 95-96, that's the only oddball diff ever offered. I have every single S10 brochure from 1994-2004, I can show you the diff options.
 
JSM

JSM

Active member
Re: WTB 2WD 8.5 3.42 axle

bigmileage said:
No you are wrong, sorry. It's a complete myth that they ever came in anything but a ZR2. There was an iron front diff in 95-96, that's the only oddball diff ever offered. I have every single S10 brochure from 1994-2004, I can show you the diff options.
Click to expand...

How come I have a 4x4 width 8.5" Diff at my house then? :roll:
 
warmpancakes

warmpancakes

New member
Re: WTB 2WD 8.5 3.42 axle

bigmileage said:
No you are wrong, sorry. It's a complete myth that they ever came in anything but a ZR2. There was an iron front diff in 95-96, that's the only oddball diff ever offered. I have every single S10 brochure from 1994-2004, I can show you the diff options.
Click to expand...


diff wants a option it was standard with
4.3 with manual trans got a 8.5


heres a Picture of a Myth

http://www.ebay.com/itm/8-5-HD-2WD-...Parts_Accessories&hash=item338b5e2f83&vxp=mtr

see the big weight on the input yoke thats a 8.5 only thing, Oh and GM parts books list a 8.5 but they dont exist
 
s106banger

s106banger

New member
Re: WTB 2WD 8.5 3.42 axle

sparkwire said:
try JD REAREND in Ritchfeild, Ohio, 330-990-8155, 330-659=7117, he can build a rearend for you.
Click to expand...

thanks rodger,
i can build a rear, i was just after something more bolt in. i may end up narrowing an 8.8 if i cant find an 8.5 this summer.
 
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bigmileage

Member
Re: WTB 2WD 8.5 3.42 axle

If it was provided - which it possible - it was never documented in any of the S10 books or any of the brochures I have. I've pulled and sold nearly 50 sets of S10 gears over the years - several out of 5-speeds - they've always had 7.625s and if they were 4x4 in 95-96 they were iron fronts as well (most common in Blazers).

I have three 8.5s and none of them have that "weight" on the pinion - they all came from S10s too. My brothers 01 Xtreme 7.625 has that same weight, so no it's not a 8.5 thing only.

The ZR2 is 100mm or 3.9" wider (2" on either side) the rear axle however is only 3" (1.5" on either side) and not the full 4" like the front frame rails are.
 
s106banger

s106banger

New member
Re: WTB 2WD 8.5 3.42 axle

there is no rpo code for them, they were generally in 5 speed 4.3 trucks (extended cab's have even a better chance) and blazers. not all of them got an 8.5 though, its hit or miss.

all you have to do is a google search and there are loads of results on this... i dont understand why your arguing this, its pretty common knowledge for anyone making any power with a s-series truck. ill take a picture with a tape measure for you when i find one, or i can get a picture of my buddies truck while he has the bed off. even though its clearly 2wd and stock width.
 
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