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Discussion Starter · #1 ·
I'm considering just rebuilding my rear drum brakes but am wondering if I upgrade to Moser axles with a 4 1/2 inch bolt pattern will I be able to eventually upgrade to a Willwod brake setup and if yes did mopar have a car with drum brakes on a 4 1/2" bolt pattern on any car? I believe the drums are 9"
 

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If you order Moser axles for an A-body 8-3/4 rear with a 4.5 bolt pattern they will ask what you are going to use for brakes. The most popular choice is to use the common B-body brake drums and backing plates, these are a 4.5 bolt pattern. I used 11" drums on mine.

Not sure if Wilwood is up to speed on the 4.5 bolt pattern axle for the A-body swap.


mike.
 

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Discussion Starter · #5 ·
Well I've got a stock 8 3/4 rear axle and I went and checked the bolt pattern it's 4 1/2" x 5 and it's 11" drums can I just buy B-body drums?
 

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Discussion Starter · #7 ·
I believe they are
 
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