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Just arrived today!
![338183]()
8.5 Rear end
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Not to be a negative nancy, but are you sure?
I can't see any of the 8.5 telltales and looks like a 7.5 to me.
Take a close look and send it back if they claimed it was an 8.5 and it isn't. Most junkyards aren't verifying what they have and using a computer system that is known to misidentify 8.5" rears from S10/Blazers.
This eBay ad has some great picture showing the difference:
I can't see any of the 8.5 telltales and looks like a 7.5 to me.
Take a close look and send it back if they claimed it was an 8.5 and it isn't. Most junkyards aren't verifying what they have and using a computer system that is known to misidentify 8.5" rears from S10/Blazers.
This eBay ad has some great picture showing the difference:
S10 8.5 Xtreme ZQ8 Pick-up truck 3.73 Auburn Posi Axle 2WD 54.5 fits Blazer | eBay
Find many great new & used options and get the best deals for S10 8.5 Xtreme ZQ8 Pick-up truck 3.73 Auburn Posi Axle 2WD 54.5 fits Blazer at the best online prices at eBay! Free shipping for many products!
ebay.us
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48,641 Posts
Yeah, that's not an 8.5.
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7,603 Posts
Looks like the same one I have laying in my garage... another project that needs completing. Nothing wrong with a 7.5, there is a thread on here that can help you build one pretty strong.
www.s10forum.com
10 bolt faq
7.5 10 bolt faq/setup/install These rearends can hold up to 350-400HP as long as you DO NOT run slicks on them. There is some part numbers to help you get started. The biggest flaw with the 10-bolt design is the flexibility of the case. When under heavy load, the pinion walks up the ring gear...
www.s10forum.com
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16,856 Posts
That's a $100 Blazer rear axle. Not a $5-800 8.6". Actually it's pretty clean. Might be worth $125.
All S10 8.5's have a reduction in the axle tube size just outside the center section and they all have the big tits on the bottom of the differential housing.
![338197]()
All S10 8.5's have a reduction in the axle tube size just outside the center section and they all have the big tits on the bottom of the differential housing.
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2,066 Posts
Yup 100% not an 8.6, was my first thought when looking at the picture before scrolling down through the comments.
Still may be useful because it has discs which is a nice little upgrade over stock drums. Strength wise an 8.5/8.6 isn't really that much stronger than a 7.5 anyway. Most LS builds on street tires won't break a 7.5, it doesn't really become a problem until trans brake launching on slicks.
Still may be useful because it has discs which is a nice little upgrade over stock drums. Strength wise an 8.5/8.6 isn't really that much stronger than a 7.5 anyway. Most LS builds on street tires won't break a 7.5, it doesn't really become a problem until trans brake launching on slicks.
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96 Posts
Thanks everybody, rear end is on it's way back to the junk yard !
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