1979 Pontiac Firebird Trans AM Brake Drum

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celticbandit - 21 Mar 2007 11:14 GMT

Hi all,

Can anyone tell me if there are different size brake drums for the
second gen T/A. I bought a set of rear brake shoes for my 79 Firebird
T/A only to find that the parts sent were smaller than the old shoes.
The drums on my car are about 11.5 inches in dia.
The parts supplier told me that the drums on my car are not
standard!!!!
Can anyone shed a bit of light on this?

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Ed.Toronto@gmail.com - 26 Mar 2007 23:59 GMT

> Hi all,
>
[quoted text clipped - 5 lines]
> standard!!!!
> Can anyone shed a bit of light on this?

Far as I can tell, all the brake drums on 2nd gen Trans Ams were 9.5"
in diameter. 11.5" sounds like a conversion from a B-body or
something. If I get a chance I'll see if my '78 Pontiac service
manual lists some apps for 11.5" drums (obviously at the back at this
point....I'm sure there were 11.5" front drums prior to disc brakes).

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