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Old 12-07-2007, 02:40 PM
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? On Granada disc brake swap

Anyone know if the Granada disc brake swap on the 63-64 Fairlanes/mustangs makes the track width narrower or wider than the original drums? I'm want to know for sure before I make a backspacing decision on wheels, either 4 or 4.5?

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Old 12-07-2007, 05:21 PM
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nope, there the same.. best to get it converted, then figure out your backspacing, just in case.. you can set it on whatever wheels you got while you wait for new wheels.
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Old 12-07-2007, 05:21 PM
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Granadas, Versailles '77/'81 = 58"
Fairlane = 59.25

Sounds like sone wheel backspacing might "cure" your problem.

Heres a pretty good site for that info:
http://www.maliburacing.com/ford_9_i..._nine_inch.htm
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Old 12-07-2007, 06:37 PM
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The width of the cars does'nt matter as I need to know if the Granada disc swap adds or subtracts width over the original drums? I know a 17 x 7 wheel with 4.0 of backspacing will fit on a drum car, but may not if the granada swap is wider and a 4.5 backspace may be needed? I already did the swap on the front discs. And the link is to a 9" atricle
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Old 12-07-2007, 07:05 PM
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Then I'd get out a tape measure and figure it out!!
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Old 12-07-2007, 07:17 PM
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Quote:
Originally Posted by Fairlane Man
The width of the cars does'nt matter as I need to know if the Granada disc swap adds or subtracts width over the original drums? I know a 17 x 7 wheel with 4.0 of backspacing will fit on a drum car, but may not if the granada swap is wider and a 4.5 backspace may be needed? I already did the swap on the front discs. And the link is to a 9" atricle
They were the same geometry, Ford never changed that.. and therefor would not change the track width in the front. but I would measure just to be sure.
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Old 12-07-2007, 08:23 PM
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Measure to be sure but I have done this swap on Mustangs and unless I am missing something there is no change.
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Old 12-07-2007, 09:28 PM
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I researched a few swap sites outside of this one and have found that the width stays the same, thanks!
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Old 12-08-2007, 06:49 AM
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Well I replaced the Mustang 9 inch rotors with the Granada 11 inch and now my front end is 1.5 or so wider. The wheels fit just fine. There is not a lot of back space that is going to do any good and still give the looks on the wheels however. This compounds an already critical tire clearance problem. You can buy 1" narrower tubular a-arms to fix this and if you really dig deep there is narrower crosmember and narrowed rack and pinion. The narrowing process however drives the cost up exponentially. haha I'm not sure if the resulting geometry is exactly corect but it seems to work from the contacts I've had. Were I to do it over I'd go this way. It just was not available when I started.
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Old 12-08-2007, 07:02 AM
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Bent, I am not questioning what you have found and I simply want to know what happened in your case because I may run into it myself. I have done two 64 1/2 Mustangs and both have been converted to Granada spindles with no changes that I am aware of except that the styled steel wheels from the period will not fit anymore. One of these was a six cylinder car with 13" wheels and of course drum brakes and the other car was a 260 with 14" drums. After the conversions there was no difference in wheel/fender clearance other than the problems with wheel fit on the rotor/brake setup, did yours have factory discs and what year was it?
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Old 12-08-2007, 07:40 AM
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Mine was an after market disc brake front end complete. It came with 9 " rotors and I replaced them with 11'' rotors. The rotors are in the same relative position to the caliper but it seems that the wheel mounting surface is out further on the Granada ones. Thus the increased width. I scratched my head on this one but now I'm screwed and commited. I'll need narower a-arms before I'm done. The only saving thing is that AZ in another state than purchased took the 9 inchers back. I

6 years ago I asked exactly the same question you have and got no good answer. Try it and see was the best I could get. The narrow front end was severely looked down on too, now it is standard practice. go figure. Funny thing is that I could easily cut off an inch per side on the rack output and still preserve rack geometry. So with narrow a-arms I will be ok on that.

You can make it up with offset in the wheels if necessary but in my opinion they look funny. I forget what the offset is on my Convo Pros but there is not much left of the "bumps" yet the wheel looks ok.
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Old 12-08-2007, 08:12 AM
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So it would seem that swapping Granada spindles with factory drum brake spindles presents no change?
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Old 12-08-2007, 09:23 AM
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Thanks for the info guys! I'm still alittle on the fence rergarding wheel choice with the Granada disc swap, but I guess 3/4 of an inch per side is not going to be the big factor in backspace, but interference with the suspension? Most of the info that I've read on 63 Fairlane wheel fitment is 4" backspace on the front and 5 on the back will work. I'm alittle more concerned with how much tire I can put under the back, I know it's not much. Maybe in a year from now I'll have to do some rear suspension/wheel well work.
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Old 12-08-2007, 09:25 AM
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I think this thread is getting confused..adding 11" Granada discs to a Mustang II spindle that had the stock 9" brakes will change the overall width 3/4". I believe that is what Bentwings is saying, (note the reference to "rack and pinion", and "shortened tubular a arms"...That isn't Fairlane stuff.

From what Oldred is saying, and what I have seen, putting Granada spindles with all of the associated hardware and brakes on an early Falcon platform car,(Mustang, possibly Fairlane), will not change the width. I know the Granada spindle swaps I have seen don't change the overall width, but the steering arm geometry is slighly different, and will get you some bumpsteer in a Mustang. (this is from 3 people with Mustangs who have done it and told me about it).

Also, there are no upgrades for a Granada swap, as far as brakes go.

I am told that the Fairlane spindles are close enough to a Mustang to swap the granada spindles.

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Old 12-08-2007, 11:28 AM
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I've done the swap and the spindles bolt on the 63 Fairlane fine, all you need to add is a new tie rod end! Seems that the Granada conversion does'nt change the width over the drum set-up, so I'm good!
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