8.8 rearend swap - Mustang Evolution

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Old 11-04-2014, 10:13 PM   #1
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8.8 rearend swap

I just picked up an 8.8 differential today to swap into my 68 mustang. Does anyone know what adapter I will need to use the driveshaft I am already using?


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Old 11-05-2014, 01:46 AM   #2
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Are you swapping the whole axle?


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Old 11-05-2014, 10:06 AM   #3
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Yes entire thing. Click image for larger version

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Old 11-05-2014, 12:57 PM   #4
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http://www.hotrod.com/how-to/transmi...l-new-rearend/

It list part numbers at the end.

Why are you swapping rear ends?


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Old 11-05-2014, 01:26 PM   #5
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Thanks!

Figured I'd go with an 8.8 instead of keeping my 8. My 8 has 2.80 gears and the 8.8 I just got has 4.10 posi and disc brakes


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Old 11-05-2014, 02:35 PM   #6
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Thanks!

Figured I'd go with an 8.8 instead of keeping my 8. My 8 has 2.80 gears and the 8.8 I just got has 4.10 posi and disc brakes


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Oh nice. Yeah ill probably get an 8.8 eventually.


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Old 11-05-2014, 02:39 PM   #7
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Quote:
Originally Posted by Bpolley11 View Post
Thanks! Figured I'd go with an 8.8 instead of keeping my 8. My 8 has 2.80 gears and the 8.8 I just got has 4.10 posi and disc brakes
You're really going to love these. I swapped from 2.80s to 3.50s back in the day in my '66. What a kick in the seat.
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Old 11-05-2014, 05:34 PM   #8
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Anyone know if when I swap the differentials if all I have to do is hook the brake line up to the new differential with disc brakes. I was going from drum brakes on the old one.


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Old 11-05-2014, 06:01 PM   #9
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Anyone know if when I swap the differentials if all I have to do is hook the brake line up to the new differential with disc brakes. I was going from drum brakes on the old one.


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If you're on drum before disc, then you will need to change brake lines, fittings are a different size, new proportioning valve and master cylinder. If you have power brakes you should check that also. You will need to change your speedo gear in the tranny to compensate for new ratio and wheel size.


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Old 11-05-2014, 06:04 PM   #10
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I could just get fitting adapters though correct? My 68 came with power brakes.


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---------- Post added at 07:04 PM ---------- Previous post was at 07:04 PM ----------

What will be different about master cylinders?


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Old 11-05-2014, 06:41 PM   #11
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You'll need them for the proportioning valve also, assuming there's room.


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