'69 Riviera, rear drum swap

Discussion in 'A boatload of fun' started by Redcap, Oct 1, 2018.

  1. Redcap

    Redcap Well-Known Member

    Recently, I completed my set of slot mags for my Riviera project, but there is a problem in the rear. The finned drums won't allow the rear wheels to seat. I don't want to butcher up a set of the aluminum drums with a lathe to make it work. Are non-finned, slightly smaller O.D. replacements available?
  2. Briz

    Briz Platinum Level Contributor

    This is what I had to do.

    KIMG0109.JPG KIMG0105.JPG
  3. Redcap

    Redcap Well-Known Member

    Finding a lathe with a large enough throat around here isn't easy! I was hoping a replacement drum would be smaller and work, as I'm not overly confident with my accuracy with an angle grinder.
  4. Briz

    Briz Platinum Level Contributor

    I used a grinder and cut off wheel. Once the fins were rough trimmed start the car,put in drive(wheels off the ground) and lay the grinding wheel against the work until smooth.
  5. racenu

    racenu Well-Known Member

    I used longer wheel studs and a wheel spacer so the rim didn't go on so far as to interfere with the drum. I was using Buick ralley wheels although so they only needed a half inch spacer to clear the drums.
    Last edited: Oct 2, 2018
  6. Wernersen

    Wernersen Member

    Any spacer recommended? i have the issues with the wire wheels on my 67 a 1/4 inch spacer could work but i the wheel is not sitting on the hub than. thinking of using 1.5" spacers hope they are not to wide.. . Does anyone have made good experience with a specific spacer?
  7. mobileparts123

    mobileparts123 Well-Known Member

    I have N.O.S. very U.S.A. made brake drums....
    Perhaps, that is your answer.....
  8. HotRodRivi

    HotRodRivi Tomahawks sighted overseas

    Studs on a Riv with spacer seems heavy. .if your looking for easyness drive around on the drums. Thry will wear to fit.
  9. buick64203

    buick64203 Just plum crazy Staff Member

    The issue with spacers is that you putting the lug nut further out on the stud instead of where it should be at the base. You exponentially increase the chances of the stud shearing off
  10. Redcap

    Redcap Well-Known Member

    Spacers are not something I want to deal with. I'm trying to run a wide rim and that will just put the sidewall of the tire closer to the lip on the fenderwell.

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