Rear discs from '76 Mark V?

[Hack]

My buddy was at the local junkyard and saw a '76 Mark V with rear discs. He says the car had a 460 4-barrel and a nine inch rear with discs. Anyone know if this will be a small or large bearing rear end? Are these discs any good?

Oh and the axle code was 1 (listed on the door).

 

[bnickel]

that rearend is basically worthless. it's actually a 9 3/8" rear not a 9" and the brakes have the 5x5 bolt pattern, the housing is setup for coil springs and a factory 4 link not to mention that it's way too wide for a mustang.

 

[96 DOHC Cobra]

Forget the MK V discs. The housing is large bearing. The axles and brakes have a 5 X 5" bolt circle. The parts are WAY heavy. Axle code "1" is a 2.50 open rear.

 

[wicked93gs]

I have an '84 lincoln rear...8.8" with rear disc, works great, but it is wider than the stock 8" in my '66...works out for me though since it means I can use modern(SN95, fox, etc) wheels without spacers in the back...though I still need them for the front

 

[Hack]

Wow, thanks for the info - very good to know. I explained to him over the phone how to id a 9 inch rear so I was pretty sure it at least wasn't an 8 inch. I also knew I had never heard of getting discs from these cars, but I didn't know why.

:SNSign:

edit: oh and by the way I have an 8.8 with the brackets cut off and I made some Mark VII flip discs for it, but now I'm thinking that Explorer discs in my small bearing 9 inch are the way.

 

[D.Hearne]

If I'm not mistaken the caliper brackets on that 76 Mark V are also welded to the housing, further making not a good disc swap donor. As for it being a 9-3/8? The housing itself is the same as a 9", just the chunk is different. The 9-3/8 chunk has different webbing on the front too, making it easy to Id.

 

[bnickel]

If I'm not mistaken the caliper brackets on that 76 Mark V are also welded to the housing, further making not a good disc swap donor. As for it being a 9-3/8? The housing itself is the same as a 9", just the chunk is different. The 9-3/8 chunk has different webbing on the front too, making it easy to Id.

yes the housing is the same but they cut a big slot in them for the 9 3/8" chunk, don't know if i would trust it to seal it up right with a regular 9" chunk in it, but i guess if it seals up with a 9 3/8 it should seal up with a 9" chunk. about the only thing i'd use it for would be to convert a 2 wheel drive to disc brakes, just cut off the coil spring perches and weld in some leaf spring perches and switch the chunk to the 9" unit. be a decent way to get discs on a pickup but that's about it, even then an explorer disc brake swap would be cheaper, but you'd have to re-drill the rotors for the 5x5 bolt pattern.

 

[ultrastang]

If I'm not mistaken the caliper brackets on that 76 Mark V are also welded to the housing, further making not a good disc swap donor. As for it being a 9-3/8? The housing itself is the same as a 9", just the chunk is different. The 9-3/8 chunk has different webbing on the front too, making it easy to Id.

Other than the coil spring setup of the Mk rear end housing, the brake assemblies are very much like the Lincoln Versailles. They have the very same design as the "C-shaped" cast anchor brakcets that the calipers slide on, like this: (caliper from the '79 Lincoln Versailles I have).

http://img182.imageshack.us/img182/4189/79lincolnreardisccalipezq8.jpg

http://img182.imageshack.us/img182/3110/79lincolnreardisccalipeyy1.jpg

The caliper anchor bracket attaches to a cast bracket that bolts to the ends of the axle housing, and also doubles as the axle retainer. You can see part of the cast retainer bracket to the left in the 1st photo link above. The rear caliper of the Mk V also mounts as the Versailles rear calipers do.

 

[D.Hearne]

Been twenty years since I saw that 70's Mark V housing, I could be mistaken, but pretty sure those brackets were welded to the housing.