8.75 Axle swap 4.0inch to 4.5inch Brake Questions

[IndianaDodge]

When converting 4-inch to 4.5-inch Axles on an A-body 8.75, What is the best scenario with the brakes, it currently has the 10inch drum! I have seen others talk that drilling the Drums for 4.5, or can I use 4.5 10-inch drums from an 8.75 truck or B-body using my current backing plate on my 71 A-body 8.75 once the Axles are changed?

Thanks, Jason

 

[71DartGuy]

I used 10 inch brakes from a 74 dodge pickup that had an 8.75 in it. you'll need the backing plates too though, I think the offset is different for the smaller 1.75 inch shoes. I gave 50 bucks for the whole set up here locally.

 

[damnimcooltom]

Yes, you'll need the backing plates that match the drums. With your stock backing plates, the drums will hit the backing plates before they seat against the axles.

 

[IndianaDodge]

Im always looking for an excuse to visit a junkyard, I know of a 70/71 Dodge truck with an 8.75 I can get cheap!