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Discussion Starter · #1 ·
I have a bone stock LS1 in my S10, and I don't plan on adding any power to it. I'd like to add posi gears too, and strengthen that 7.5" a little. I only use this truck on the street and I don't plan on doing hard launches during my occasional track days. Does anyone have any experience with how these 7.5's hold up for street use?
 

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That rear will be ok HOWEVER, why not put an 8.8 in there?
The stock 7.5/7-5/8 will eventually give out be it broken teeth, broken carrier or worse broken axle flying out of the housing...... Yeah a few will say they have a stock small 10 bolt that has been fine but why wait for carnage or even injury. 200.00 and an 8.8 could be in your truck
 

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Discussion Starter · #4 ·
That rear will be ok HOWEVER, why not put an 8.8 in there?
The stock 7.5/7-5/8 will eventually give out be it broken teeth, broken carrier or worse broken axle flying out of the housing...... Yeah a few will say they have a stock small 10 bolt that has been fine but why wait for carnage or even injury. 200.00 and an 8.8 could be in your truck
For a little background, this truck is my daily and a project my dad and I have shared. He says the 8.8" would take up too much time and just be another project, so we're looking at the route of just replacing the gears.
 

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I had my 8.8 out of a Mountaineer in 30 minutes drove to the auto parts store for the conversion U joint, rear end oil and brake line fitting. Back home pulled the 7.5 out put the 8.8 in all in 1 hour so within a 2 hour time frame I achieved LSD, 4.10s and a stout rear. Sounds like NO time was wasted and I was 45 years old then. Ultimately it's your choice and time
 

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Discussion Starter · #8 ·
I had my 8.8 out of a Mountaineer in 30 minutes drove to the auto parts store for the conversion U joint, rear end oil and brake line fitting. Back home pulled the 7.5 out put the 8.8 in all in 1 hour so within a 2 hour time frame I achieved LSD, 4.10s and a stout rear. Sounds like NO time was wasted and I was 45 years old then. Ultimately it's your choice and time
You didn't have to narrow it?
 

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No, I use corvette wheels with a 1.25" Ford to Chevy spacer or I will redrill axles
You can also use Mustang wheels out back 17×10 Cobra Rs look sweet on s10s
349514
 
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Discussion Starter · #10 ·
No, I use corvette wheels with a 1.25" Ford to Chevy spacer or I will redrill axles
You can also use Mustang wheels out back 17×10 Cobra Rs look sweet on s10s
View attachment 349514
I thought the pumpkin was shifted from the center on those, so you had to cut at least one side? Is that only with certain models?
 

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That small offset has nothing to do with function.



 
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I have a bone stock LS1 in my S10, and I don't plan on adding any power to it. I'd like to add posi gears too, and strengthen that 7.5" a little. I only use this truck on the street and I don't plan on doing hard launches during my occasional track days. Does anyone have any experience with how these 7.5's hold up for street use?
I have a bone stock LS1 in my S10, and I don't plan on adding any power to it. I'd like to add posi gears too, and strengthen that 7.5" a little. I only use this truck on the street and I don't plan on doing hard launches during my occasional track days. Does anyone have any experience with how these 7.5's hold up for street use?
I would recommend avoiding the 7.5" like the plague. We replace my IROC's aussie 9 bolt with one and it blew to smithereens on a drag launch. Stock 350 TPI motor making 230 horse. It scattered the ring and pinion, and took out the transmission at the same time. One of GM's biggest pieces of junk ever. I don't know if the later 8.5 inch will fit your application, but I think they are a different size that won't fit the earlier square body S10s. If you are going to go with the smaller rear ends, I would get the 7.625 rear end and massively beef it up. It has held up to my 360 HP 350 on a 1993 V8 conversion. Hope this helps :)
 

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Discussion Starter · #13 ·
I would recommend avoiding the 7.5" like the plague. We replace my IROC's aussie 9 bolt with one and it blew to smithereens on a drag launch. Stock 350 TPI motor making 230 horse. It scattered the ring and pinion, and took out the transmission at the same time. One of GM's biggest pieces of junk ever. I don't know if the later 8.5 inch will fit your application, but I think they are a different size that won't fit the earlier square body S10s. If you are going to go with the smaller rear ends, I would get the 7.625 rear end and massively beef it up. It has held up to my 360 HP 350 on a 1993 V8 conversion. Hope this helps :)
It's held up to my LS so far, and I almost never launch it. I think it'll hold up the way I drive it.
Really, the only reason I want the LSD is so I don't get made fun of for one tire fires at car meets :)
 

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Look for an Auburn or Torsen take out over on LS1 tech. Guys take them out all the time and can be got for usually under $100. If you never launch it or put sticky tires on, it will live just fine.
Last time I busted a 10 bolt
 

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Not sure how much you are looking to spend, but I just came across this setup on the site.

 
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