THEY'RE STILL OUT THERE---GRANADA'S WITH 9" REARS

D.Hearne · Dec 2, 2006

Was in a pipe yard waiting to load yesterday in Houston Tx. There was a clean, low miles 1980 Granada sitting in the yard that belonged to one of the guys working there. He'd bought it in Kentucky from a senoir citizen with low miles on it. We talked a few minutes about the disc brake swap to older Stangs, when I got down and looked under the rear of the car. WOW!!! Had a 9" rear with drums. First one I'd seen. I told him if he ever sold or wrecked the car, don't let the rear and front discs get away. This was a 4 door, 6 banger car with leather seats. Two tone bronze and brown. Pays to look under all the Granadas and Monarchs, you never know what's under them.

danny clemens · Dec 2, 2006

I don't know what's underneath them but I know where several late 70's Granadas are in junkyards. I was under the impression that they would be 8" at best. Just goes to show what I know. Maybe I should go take a look.

D.Hearne · Dec 2, 2006

Yea, better take a look-see, never know what they have. I look under every one I see. The "Versailles" rear I had under my 67 FB actually came from under a Monarch.

ultrastang · Dec 2, 2006

There were 4 possible rear ends in the '75-'80 Granadas/Monarchs:

1. 8-inch drum brake rear end.

2. 8.7" drum brake rear end (integral-style rear end with bolt-on rear housing cover). Not a good performance choice.

3. 9-inch drum brake rear end. (factory option)

4. 9-inch disc brake rear end (same rear end as '77-80 Lincoln Versailles). (factory option).

Some of the 9-inch rears had 2-pinion Traction-Lok differentials. Some had the stronger 4-pinion Traction-Loks. Most, however, had single track (open) differentials.

In the 9-inch rears, there were only four ratios choices from the factory;

1. 2.47,

2. 2.50,

3. 2.75,

4. 3.00:1

This is a 9-inch (formerly drum brake) rear end that I got from an '80 model Mercury Monarch. http://img390.imageshack.us/img390/2526/monarch9inchyy0.jpg

I used this rear end as the basis to convert it over to Cobra rear discs for my '68 Mustang. http://www.ultrastang.com/images/2006/cobrabrakehosemount0243cf_2.jpg

www.ultrastang.com

bsedwebt70-5.0 · Dec 2, 2006

I actually bought a Monarch 2 dr 302 loaded model years ago that had the 9" 2.47 POSI with DISC brakes for $100 - it was in driving condition but had been wrecked. I have also bought several Versailles over the years with the discs -- I will probably not do any more of that since there are so many good aftermarket 4 wheel disc systems out there that are superior to the old stuff - my only concern with the aftermarket is what happens if that company goes out business and I need a caliper or pads....

PJx5x · Dec 2, 2006

bsedwebt70-5.0 said:
my only concern with the aftermarket is what happens if that company goes out business and I need a caliper or pads....

thats whats great about the conversions to use late model mustang parts

ultrastang · Dec 2, 2006

bsedwebt70-5.0 said:
I actually bought a Monarch 2 dr 302 loaded model years ago that had the 9" 2.47 POSI with DISC brakes for $100 - it was in driving condition but had been wrecked. I have also bought several Versailles over the years with the discs -- I will probably not do any more of that since there are so many good aftermarket 4 wheel disc systems out there that are superior to the old stuff - my only concern with the aftermarket is what happens if that company goes out business and I need a caliper or pads....

I designed my own adapter brackets; http://www.ultrastang.com/images/2006/sn95bracketkit.jpg . The brake components are a Ford design that are available from Ford or the aftermarket. As popular as the SN-95 Mustangs are, parts will be available for quite some time.

www.ultrastang.com

65ShelbyClone · Dec 3, 2006

D.Hearne said:
WOW!!! Had a 9" rear with drums. First one I'd seen. I told him if he ever sold or wrecked the car, don't let the rear and front discs get away. This was a 4 door, 6 banger car with leather seats.

It is really beyond me why Ford would put a 9" behind an I-6 and an 8" behind a 302, especially when the small v8s made maybe 160hp in 1980 and the 6s made even less. Oh well, it would be a nice surprise to find in a junkyard.

Nemesis67 · Dec 3, 2006

I look under all the Granada's I come across as well. But I haven't found a 9 under any of them. I finally found a 9 under a cougar that was sitting in a salvage yard here in Wichita Falls, TX. They pulled it and sold it to me for $150.00. It has drum brakes but no big deal, I plan on putting aftermarket brakes on it anyway.
They knew they underpriced it as soon as they pulled it, but the deal was already done.

D.Hearne · Dec 3, 2006

Value on a 9" Cougar rear would heavily depend on the year model. If it was a mid to late 70's model, $150 would be too much. All those years had 9" rears.

D.Hearne · Dec 3, 2006

65ShelbyClone said:
It is really beyond me why Ford would put a 9" behind an I-6 and an 8" behind a 302, especially when the small v8s made maybe 160hp in 1980 and the 6s made even less. Oh well, it would be a nice surprise to find in a junkyard.

Ford's always had strange parts combos. Nothing surprises me. Like the Explorer rears. 31 spline axles with a weak kneed, slush box shifted SUV? But the Ranger's that had higher GVW's got 28 spine units ? I think the reason behind that 80 model with a 9 was to use up the stock from the Versailles line. These rears didn't work under any other later model Fords. Too narrow for the pickup line and all the cars went to 4 link suspensions after 80.

Nemesis67 · Dec 4, 2006

D.Hearne said:
Value on a 9" Cougar rear would heavily depend on the year model. If it was a mid to late 70's model, $150 would be too much. All those years had 9" rears.

I believe it was either a 72 or 73 Cougar. I just wanted the housing and diff.carrier. I plan on going through the entire rear and replacing all the internals. Plus it is a straight bolt in if I want it to, the housing is the same length. And the spring perches are the same as my 8" under my 67 FB. What's the skinny on the mid - late 70 cougar rears?

ultrastang · Dec 4, 2006

Nemesis67 said:
I believe it was either a 72 or 73 Cougar. I just wanted the housing and diff.carrier. I plan on going through the entire rear and replacing all the internals. Plus it is a straight bolt in if I want it to, the housing is the same length. And the spring perches are the same as my 8" under my 67 FB. What's the skinny on the mid - late 70 cougar rears?

I'm pretty certain the '72/'73 Cougar would have the very same housing width as the '71-'73 Mustang, which would be 3.75" wider than a '67-'70 Mustang's rear end.

www.ultrastang.com

Nemesis67 · Dec 4, 2006

Well crap! I guess I'm going to go down to my garage and re-measure the housing. But I could have sworn it was the exact measurements as my 8". Either that or I have the wrong year cougar.

bnickel · Dec 4, 2006

69 or 70 cougar would have the same widthe rearend as the 67.

D.Hearne · Dec 4, 2006

What you have to watch is the posted dimensions of the various Ford rears. The housing length is not the same as the axle to axle flange length. There's about a 5" difference there. I too have always thought the 71-73 Cougar rear would be the same wider (than the 67-70 Stang) rear the same year's Stangs were.

ultrastang · Dec 4, 2006

Nemesis67 said:
Well crap! I guess I'm going to go down to my garage and re-measure the housing. But I could have sworn it was the exact measurements as my 8". Either that or I have the wrong year cougar.

1. 1965-'66 Mustang rear end width (bare --no axles/brake assemblies) 52¼" wide.

2. Housing width increased in 1967. 1967-'70 Mustang housing width, 54¼". (The Cougar came out in 1967. It was basically the "sister car" to the Mustang, with many of the parts being interchangeable between the two).

3. Housing width increased again in 1971. 1971-'73 Mustang housing width, 56".

If the Cougars changed along with the Mustang (and I couldn't see that it wouldn't), then they should have the same housing widths as the Mustangs.

www.ultrastang.com

Nemesis67 · Dec 4, 2006

I just did a calibrated eyeball on the rears. It looks like the 9" is a little wider. But It's too close to call at this point. But all is well, like I said I just wanted the diff. and housing. I can have the axle tubes cut to narrow the rear. Which I was going to do anyway to get a little extra tire. I did notice on the 9" that the drum brakes are way larger than what's on my 8" so that's making it look wider. So I guess it will remain a mistery until I dismantle the 9". So I'll stop babbling on about this and post a thread some day so I can stop bogarting this thread. The 9" did not have a tag on it when I bought it, so I can't get the gearing and other essential info from there.

THEY'RE STILL OUT THERE---GRANADA'S WITH 9" REARS

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