Aluminum brake drum help...???
 

I have two aluminum brake drums, thought they may be a good Ebay item. But I have no clue what they might have gone on, can some one please help? They have GM part number 1255496 cast on the inside.

Steve

Re: Aluminum brake drum help...???
 

Some Buick came with these on the back drums. We used a pair on the back of a B/stocker [img]/ubbthreads/images/graemlins/naughty.gif[/img]

Re: Aluminum brake drum help...???
 

I am thinking that the Yenko Corvair Stingers came with these, either as a GM option or a Yenko option, do not remember which.

Re: Aluminum brake drum help...???
 

Some one else just told me possible Buick over the phone, if they came on a Yenko I would freak. I won't be able to sell them if they did, cause they are the closest thing I will ever have to a Yenko.

Re: Aluminum brake drum help...???
 

Measure the bolt pattern and you will know. buick was a 5" pattern not a 4 3/4" GTO/Chev pattern.

Re: Aluminum brake drum help...???
 

If I measured right, 4 and 3/4.

Re: Aluminum brake drum help...???
 

Probably late '70s, early '80s G-body.

Re: Aluminum brake drum help...???
 

A easy way to measure the bolt circle acurately is to skip the hole directly next to the one you place your tape on (be sure to hold it to the outside of the lug hole) and then go to the 2nd hole and the correct measurment is the center of that next hole. Try it and with pratice you will always find the correct measurment of the bolt circle. I learned that little trick from Jerry at burgraff tires here in tulsa years ago. Used to buy a lot of mags from them for my used car lot. [img]/ubbthreads/images/graemlins/scholar.gif[/img]

Re: Aluminum brake drum help...???
 

That is what I did, and I'll up you on that. I used a micrometer instead of a tape measurer.

I'm thinking more and more, these will find away on one of my cars instead of auction.

Re: Aluminum brake drum help...???
 

Part number #1255496 is an Aluminum Rear brake drum for:
*1978-80 A-Body Olds
*1978-81 G & B-Body Pontiac-Buick
All rear wheel drive cars.
It is no longer available,but is Superceded by GM Part#15693455 Today.
Rick