[Amc-list] brake upgrades, was Re: Sunday drives

[Tom Jennings <tomj@xxxxxxx>]

On Thursday 09 August 2007 05:15:41 Sandwich Maker wrote:

> if you've got the amc15 rear, many ~'77-up - concord wagons most
> commonly - had amc15s with 10" drums.  these are the same as the
> '73-up std v8 brakes and were used up to '89 on cherokees and
> wranglers.  substantially only the backing plates are different for
> the different axles.

...drums and HUBS are different between 9" and 10" rear brakes -- I think. I 
am compiling this information now (well, yesterday). I have a 1977 AMC15 
10x1.75" set here.

The center hole size differs on 9x2, 9x2.5, and 10xanything drums. I'm hoping 
there's just three hole sizes, but my early American may be a 4th, if so, 
there are likely more.

I hope that all 9x2's are the same, 9x2.5, etc... but I don't know yet. Bigger 
drum, bigger center hole seems to be the pattern.

There's simply a lot of data to put together. I'm working at it continuously. 
I think after I get the data that John gave me (thanks again!) in, and some 
of this data reduction crap done I may publish it with some years missing. I 
can fill thos in on a second pass.
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