[Vinny001]

Hi all, I am new to this forum. I bought a 1965 mustang coupe that came with changes to it. One is the rear end.
I am not sure what it is, was told it was a 9" ford with 11" x 2 1/2" brakes, but was not told what year. There are no tags on the housing that would tell you about it. It has 2 pin hold down springs per shoe, see pic.

I have not seen any kind of setup like this before now. I know a thing or two about brakes, but not as familiar with rear ends. It might be a 8" or a 9" small bearing housing.
I am holping someone can help me out on this. I can send or post more pic. if needed.
Thanks everyone
Vince

 

[Space]

https://www.jalopyjournal.com/forum/threads/differences-between-ford-8inch-and-9inch-rears.641672/

 

[TFiG]

Jalopy Journal is good info. Is it a pumpkin style diff? ie: centre section (where pinion flange is) unbolts from the front of the diff. You can unbolt a 8” with a socket on all the nuts, on 9” you need a wrench on the bottom 2 nuts. To find the ratio 1) determine if it’s an open diff (non posi) or posi diff. 2) With the back end of the car jacked up and the trans in N, spin one back wheel. If both back wheels spin the same direction, then it’s posi. If the wheels spin in diff direction then it’s an open diff. 3) On posi mark the wheel and mark the driveshaft, spin the wheel 1 revolution and have someone count how many times the driveshaft turns. ie: if driveshaft turns 3&1/2 times then 3.50 gear ratio.
On an open diff, block one wheel from turning. Spin the other wheel 2 revolutions and have someone count the number of times the driveshaft turns. Same concept as posi.
Hope this helps.