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Posted

Does anyone happen to know how much a 10 inch drum can be machined oversize, is it .030 which gives you a total of .060, or is .045 which gives a total of .090. I now have confirmed I have the Plymouth spindles on my 47 Chrysler, as well as the 10 inch brakes, the brakes are working pretty good, all is new. But the drums weren't measured when they were machined 2 years ago, the shop just removed what they had to, I can't remember if it was the front or back where he machined .003, but one set was around.009. . If the front drums are machined out too far, I am ffffed, will then possibly convert to disc brakes. I had the drums off today, they look thin, can you tell by looking at them. I plan on taking them in for a measurement real soon. I have a real good set of 11 inch front drums and backing plates from Pat S, but can't use them because I would have to change back to the larger spindles, I do have a parts car with them, is it a real big job to change spindles........Fred

Posted

Rockwood aka Fred, if you are going to do king pins just swap the spindles out then. I would go with the 11" set from Pat as they will definitely give you better braking due to increased surface area. That is what the engineers figure the car needed when it was built and it is definitely heavier than a Plymouth as well. Doing king pins is not a bad job. I am not a mechanic but I have done them on my '38 Chrylser and the '48 Dodge. Having the parts from Pat and a parts car would indicate making the change is divine guidance LOL. Ain't parts cars great? A service manual is a help but if you don't have one there are lots of guys on this forum who can help.

Posted

Thanx Robert,if these drums are machined out too much, I am going to seriously look at converting to disc, it would a better braking system and less complicated than the lockheed system. I am hoping the drums are okay, I would use these brakes at first then figure out what I plan on doing next, my king pins seem to be in good shape, but even these and the rest of the front end will get done. I am not concerned about being real original, as my car is a driver, and a bit of a resto rod when I am finished with her.......Fred

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