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Old 02-29-2012, 11:05 PM   #1
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8.8" rear

Can I swap a rear end from any 8.8" mustang?
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Old 02-29-2012, 11:47 PM   #2
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Re: 8.8" rear

No - not "any" Mustang.

But yes, you can swap any 8.8 from a S197 from 2005-2013. They will bolt up the same way, all are 3 link. (which is why you can't do it from an earlier year, they used 4 links on SN95 and Fox body chassis).

If you get a 2011+ it will bolt up to the V6 driveshaft for 2005-2010. If it is from an earlier year, then you will need to swap the pinion flange to a cobra flange.
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Old 03-01-2012, 08:28 AM   #3
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Re: 8.8" rear

Awesome, thanks for the help! I've heard too many bad things about the 7.5" with high gear ratio + power adds
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Old 03-01-2012, 09:24 AM   #4
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Re: 8.8" rear

Quote:
Originally Posted by JimC View Post
No - not "any" Mustang.

But yes, you can swap any 8.8 from a S197 from 2005-2013. They will bolt up the same way, all are 3 link. (which is why you can't do it from an earlier year, they used 4 links on SN95 and Fox body chassis).

If you get a 2011+ it will bolt up to the V6 driveshaft for 2005-2010. If it is from an earlier year, then you will need to swap the pinion flange to a cobra flange.
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Old 03-01-2012, 11:25 AM   #5
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Re: 8.8" rear

I'm reconsidering the 8.8" thinking if I use my 7.5" with higher gears + power adds (no forced induction), if I blow the axle I'm not out all that much.

With that said, do you have an opinion on 3.73 vs 4.10 ratio with v6 automatic. would I be able to get up to high speeds still with the 4.10? would I be more likely to blow the axle? Would I take a BIG hit on gase mileage?
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Old 03-01-2012, 06:31 PM   #6
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Re: 8.8" rear

I tried to build a 7.5 up - had the tlok, 3.73 Richmond gears, and the LPW girdle on it.

When I broke it with just a tune, CAI, and a set of drag radials I discovered that it was CHEAPER to swap the 8.8 in than it was to build the 7.5. Check your pricing - unless you have the skills and tools to do the work yourself I think you will find yourself money ahead to just swap the 8.8 in and be done.
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Old 03-01-2012, 06:48 PM   #7
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Seen stock 7.5's run 7's in the 1/8 and twist DS on slicks.....that said I would not suggest building or beating on one.
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Old 03-01-2012, 08:42 PM   #8
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Re: 8.8" rear

I got looking around on the issue a little and found a lot of people that don't have any issues. Found one forum saying the manuals can't run higher gears/tlok on the 7.5" because they are dropping it in around 2500rpm, the automatics don't drop it in so not an issue. Thoughts?!?

---------- Post added at 08:42 PM ---------- Previous post was at 08:39 PM ----------

Quote:
Originally Posted by JimC View Post
I tried to build a 7.5 up - had the tlok, 3.73 Richmond gears, and the LPW girdle on it.

When I broke it with just a tune, CAI, and a set of drag radials I discovered that it was CHEAPER to swap the 8.8 in than it was to build the 7.5. Check your pricing - unless you have the skills and tools to do the work yourself I think you will find yourself money ahead to just swap the 8.8 in and be done.

I was thinking it'll only cost $350 to put in tlok and gears, it'll be $1300 for new rear assembly. so i can blow it 3 times before i've paid for the assembly once.
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Old 03-01-2012, 09:10 PM   #9
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Re: 8.8" rear

If you can build one for $350 -- all of the parts and labor -- you have some cheap shops around you. The tlok itself is just over $200, then you need the install kit for another $70 or so, and gears will run around $175. So parts alone are more than your estimate I think.

And if you do some searching you can find rear ends for less than the $1300 you estimated.

And my car is an automatic - with the Richmond gears, supposedly indestructible I bent the pinion with just CAI, tune and drag radials. Others I know had the same thing happen with their automatic cars too with similar set ups; of course those with power adders broke the rear end even quicker.
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Old 03-01-2012, 09:20 PM   #10
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Re: 8.8" rear

I can install them myself, so my only cost is parts. Parts get expensive if you have to keep buying them. I've heard a lot of people blow through the 7.5, but it seems hard to believe that am muscle would have so many positive reviews if that is normal. I'm also running stock 18" rims/tires, so my grip should be less than yours.
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