bdennis
Well-known member
Hey guys,
I am rebuilding the 9inch diff and centre on my 72 Mach 1.
I am replacing all bearings and gaskets.
I have a question...
What backing plate gasket is the right one / best one for the 9inch on a 72 mustang (H code / FMX / 2.75 diff).
Note it did not have an inner one installed on either axle when I disassembled the diff.
The one that was in the car that I am confident is factory is made of metal.
The same as this one.
![D0OZ-1001-A[1].jpg](https://cdn.imagearchive.com/7173mustangs/data/attachments/84/84200-461a113b3bf5b39e4b807b1dc1943cc7.jpg "D0OZ-1001-A[1].jpg")
The alternative is the paper based type.
They are the same size
![C5ZZ-1001-I[1].jpg](https://cdn.imagearchive.com/7173mustangs/data/attachments/84/84198-e1ee96687fa552632c336cb465d74a31.jpg "C5ZZ-1001-I[1].jpg")
Im inclined to install the metal type so it is exactly the same as what was in the car.
Any advice / experience would be appreciated.
I am rebuilding the 9inch diff and centre on my 72 Mach 1.
I am replacing all bearings and gaskets.
I have a question...
What backing plate gasket is the right one / best one for the 9inch on a 72 mustang (H code / FMX / 2.75 diff).
Note it did not have an inner one installed on either axle when I disassembled the diff.
The one that was in the car that I am confident is factory is made of metal.
The same as this one.
1970 - 1973 MUSTANG BACKING PLATE AXLE GASKET (METAL) 8" & 9" AFTER 9/30/1969
(D0OZ-1001-A)The alternative is the paper based type.
1964 - 1973 MUSTANG BACKING PLATE AXLE GASKET (INNER) 8" & 9"
(C5ZZ-1001-I)They are the same size
Im inclined to install the metal type so it is exactly the same as what was in the car.
Any advice / experience would be appreciated.
