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56 pontiac disc brake conversion??

Discussion in 'The Hokey Ass Message Board' started by 31bowtie, Aug 16, 2011.

  1. 31bowtie
    Joined: Aug 8, 2009
    Posts: 62

    from maine

    I would like to upgrade my 56 Pontiac Star Chief to disc brakes on the front. If someone has done this and has advice I would appreciate the help! Thanks!
  2. squirrel
    Joined: Sep 23, 2004
    Posts: 46,870


  3. 56oldsDarrin
    Joined: May 9, 2009
    Posts: 396


    Damn, he beat me to it!
  4. bryan6902
    Joined: May 5, 2008
    Posts: 1,137


  5. chiefdan
    Joined: Sep 17, 2011
    Posts: 4


    I'm looking to do the same thing for my 57. Here are some other options for 55-57 Pontiac's - though with the the Performance Online kit you will end up with a different bolt pattern (5 x 4 3/4) on the front than the standard rear (5 x 5).

    Did you stick with your original master cylinder and pedal setup? BTW, I read your entire build thread a couple of months back. Inspiring stuff!

  6. bryan6902
    Joined: May 5, 2008
    Posts: 1,137


    If you go back you'll see that I eliminated the factory heater box and switch to a aftermarket pedal set-up with a dual resevoir master.

    You do end up with different bolt patterns. Not a big deal with steelies and caps. I actually found a uni-lug steel wheel for a spare. And you have to run 15's to clear the calipers.

    Thanks for the nice words on my build. Can't wait to get it out in another month or so.

  7. chiefdan
    Joined: Sep 17, 2011
    Posts: 4


    Doh! I knew I should have referred back to your thread before I asked. A professional looking job. Thanks
  8. IRISH13
    Joined: Oct 19, 2010
    Posts: 71

    from SoCal

    ABS Brakes in Orange county,Ca sells a disc brake kit for Pontiacs. They go onto the stock spindles.
  9. rcboals
    Joined: Aug 14, 2012
    Posts: 1


    After contact with ABS I will not be goin with them just my gut feeling. Contacting Scarebird again.

    Pic below is my car since 1983.

    Attached Files:

    Last edited: Aug 16, 2012
  10. I can tell you mark at scarebird make a great kit.
  11. Scarebird
    Joined: Sep 26, 2006
    Posts: 868

    Alliance Vendor
    from ABQ, USA

    So would I. We did a 55 last summer, required a special hub and trimmed rotor coupled with a cheater Metric caliper to fit the stock 15" rim. Customer emailed last week telling me of ABS' setup - supposedly a 80's Caddy caliper (2-1/2" bore) with "secret" 12" rotor. I don't see it fitting, nor the caliper being a good hydraulic match for the stock manual master...
  12. SusnaWit
    Joined: Aug 15, 2012
    Posts: 3

    from new ryork

    They take your spindles and machine them to accept tapered roller bearings.[​IMG]
  13. 55Ponchochief
    Joined: Sep 6, 2012
    Posts: 4


    Im sure Sacrebird sells good part. But Check out the guys at performance online . Picked up discbrak kit with booster and master cylindr for my 55 Chieftain.It stops as good as my new truck (non abs stop of course). They are in Fullerton .Ca As to the guys at ABS meet them at our local swap meet nice guys way to overpriced.
  14. 55yak
    Joined: Nov 5, 2011
    Posts: 41


    To 55Ponchochief,
    Did you have to lose your 5x5 bolt pattern on the front? Did you have to lose your stock firewall mounted heater core to mount the booster/master cylinder combo?
  15. It would seem kind of foolish to me to attempt to run discs with the stock master in the first place. Most disc/drum setups use a dual chamber master made for those applications.

    But that is kind of a pain in the ass on these, there's not a lot of room to work with unless you move/eliminate the firewall defroster core and put a hanging pedal unit in there.
  16. OK, I guess I am confused. According to Scarebirds website they say no machining is required with their adapter plates and using the parts they list but a lot of you guys are saying machining is required.

    Also, does anyone know which brake hoses are needed to do the conversion?
  17. ClassicDriver
    Joined: Mar 8, 2010
    Posts: 114


  18. I'll find out tomorrow/wednesday. I am just awaiting my front end kit from Kanter and then the new front end will be installed with the Scarebird brackets and disc brake components. Granted, mine is a 57, but the kit is listed as the same.

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