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Old 10-01-2007, 11:23 AM   #1
john64
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Join Date: Jul 2007
Location: Tayport, Scotland
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Brake drum help

Hi I have just bought new drums for the rear of my 1967 gmc leaf sprung 1/2 ton. The inside of drum seems the same 2''. Problem is new brake drum middle dont seem to be deep enough. When fitted seems to be 1/2'' gap to backplate. The centre bowled bit on old drum seems to be 1/2'' deeper. When I check brake sites online drums seem to list only one kind. Part number stamped inside old drum is 34990. Anyone tell me what I've got wrong ?? I cant just go to local parts shop as I am in Scotland and have to order from USA if I need parts so would like to find out if its me or parts shop thats got it wrong.

Thanks
John
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Old 10-01-2007, 02:24 PM   #2
john64
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Re: Brake drum help

I have just taken some pics but dont know how to attach them.
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Old 10-01-2007, 02:46 PM   #3
john64
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Re: Brake drum help

http://upload3.postimage.org/368604/photo_hosting.html

Last edited by john64; 10-01-2007 at 03:23 PM.
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Old 10-01-2007, 03:53 PM   #4
Robznob11
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Re: Brake drum help

that # don't cross refarance
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Old 10-01-2007, 05:24 PM   #5
john64
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Re: Brake drum help

Can anyone post a pic of a 1/2 ton and a 3/4 drum for a '67 leaf sprung truck.
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