8.8" vs Built 7.5" - Mustang Evolution

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Old 07-07-2013, 08:07 AM   #1
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8.8" vs Built 7.5"

So comparing pricing and durability and performance here. How much typically would it be to get an 8.8" off a junkyard s197 compared to putting in an LSD with some 3.55 or 3.73s with the whole install and bearing kit? Opinions are very welcome!
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Old 07-07-2013, 08:39 AM   #2
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Even with a supercharger the stock 7.5 will hold up you would struggle to make enough power to break it
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Old 07-07-2013, 11:50 AM   #3
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Yes, but it will take much more torsional stress than an 8.8 and will break eventually
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Old 07-07-2013, 12:26 PM   #4
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I'm just thinking that for the price I could upgrade my 7.5" then I could get an 8.8" and it be better than an upgraded 7.5"!
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Old 07-07-2013, 03:32 PM   #5
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The worst modding decision I ever made was trying to build a 7.5 up. It cost more to have a tlok, 3.73's, and the LPW girdle installed than it cost to swap the 8.8 after I broke it.

And 2300turboford - all it took was a set of drag radials and tune to break the 7.5 after I tried to build it. This was on an allegedly "indestructible" set of Richmond gears. And I know many guys with superchargers who broke the 7.5 as well.

Just swap to the 8.8 - unless you have the skills to build it yourself it will cost you more in the end to build the 7.5. And you will still have a weak rear end that will eventually break. I even managed to toast a tlok on my 8.8 with the 4.0 and Xcharger.
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Old 07-07-2013, 06:24 PM   #6
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Don't put a 7.5 in the car. Even built they are weak. I have broken two built 8.8's in my day, on very mild street car using nitro drag radials. Nothing is indestructible but save yourself the headache and install the 8.8 while you have the chance.
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Old 07-10-2013, 06:29 PM   #7
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Quote:
Originally Posted by aegischief View Post
Don't put a 7.5 in the car. Even built they are weak. I have broken two built 8.8's in my day, on very mild street car using nitro drag radials. Nothing is indestructible but save yourself the headache and install the 8.8 while you have the chance.
I have been debating this for a while. I'm now convinced to go for the 8.8. You are right, that's the way to go.
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Old 07-10-2013, 08:50 PM   #8
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Quote:
Originally Posted by aegischief View Post
Don't put a 7.5 in the car. Even built they are weak. I have broken two built 8.8's in my day, on very mild street car using nitro drag radials. Nothing is indestructible but save yourself the headache and install the 8.8 while you have the chance.
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Old 07-16-2013, 10:17 PM   #9
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2007 V6 is stock with 7.5 or 8.8? Asking for someone else. I honestly don't know either.
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Old 07-16-2013, 10:22 PM   #10
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Originally Posted by Polar Bear View Post
2007 V6 is stock with 7.5 or 8.8? Asking for someone else. I honestly don't know either.
7.5
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Old 07-16-2013, 10:28 PM   #11
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That was quick. Thank you.
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