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Offline PhiLov80

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Differemtial swap
« on: March 07, 2014, 12:39:51 AM »
I am modifying an 80 Pinto cruiser wagon. 87 turbo fuel injected motor, totally blue printed, balanced, big valves, 5-speed. Purchased an 8.8 disc brake posi that will have to be narrowed to make it work. Is there a simpler solution? I've read an 8" Mustang II will bolt in without narrowing. However I've yet to find one with 5-lug disc. Any suggestions?

Offline Pinto5.0

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Re: Differemtial swap
« Reply #1 on: March 07, 2014, 12:57:36 AM »
The MII 8" rear does swap right in but you will either need custom axles or you can re-drill the stock axles to 5 lug. I have a set at a machine shop getting that done now.
 
There are guys with the 8.8 out of an Explorer that swap the long tube & axle out for another short side & run them. A 67-ish Mustang 8" comes 5-lug & is only 1 1/2" wider & swaps in by simply welding on spring pads. I picked one up for $100 complete.
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Offline Pinturbo75

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Re: Differemtial swap
« Reply #2 on: March 07, 2014, 07:40:37 AM »
im running a 8.8...... i started with a disc rear end and it was too wide so i swapped in some fox mustang axles and drum brakes which narrowed it  1.5 inches... i run 15x8 rims with 5 inch backspacing and it all fits under the car.... if you want disc id go as suggested with a exploder rear end with one side shortened..... if you get it from a 4x4 you get 31 spline axles and either 373 or 410 gears from the factory....
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Offline tbucketjack

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Re: Differemtial swap
« Reply #3 on: March 09, 2014, 12:34:41 AM »
There is another posibility and thats a 7.5" out of a 90's Ford Ranger.

Offline pintoguy76

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Re: Differemtial swap
« Reply #4 on: March 09, 2014, 02:23:54 PM »
Id like more info on this 8.8 swap from an explorer. i can get a good rearend from an explorer out of the pull you own parts yard for like $100 and it'd have disc brakes, 5 lugs and possibly a positrac already. The stock gears would be wrong for me, but could work still.


What needs to be done to make it fit a pinto? Does it need the axle tubes narrowed and new spring perches and shock mounts added or do i just use two short axle shafts in the existing tubes and change the spring perches and shock mounts?
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