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Thread: Brake conversion

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  1. #1
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    Brake conversion

    I about to convert my brake system on my 57 Belaire. I want front power disc and rear drum. Any ideas on what products to use and best prices and service. Thanks, Craig

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    Registered Member NickP's Avatar
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    Budget?

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    2 grand

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    Registered Member NickP's Avatar
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    Quote Originally Posted by craig j View Post
    2 grand
    Present front suspension modifications to include wheel/tire if any? Wheel size (diameter) now or will be bart of overall package?

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    I have 18" rims all around. this work for brakes only, I'll convert to power steering at a later date.

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    Registered Member NickP's Avatar
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    Quote Originally Posted by craig j View Post
    I have 18" rims all around. this work for brakes only, I'll convert to power steering at a later date.
    So, presently no dropped spindles or other modifications to your front suspension? Any plans to do so later?

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    Registered Member chevynut's Avatar
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    Avoid the disc brake conversions based on the 68-72 Chevelle rotors as they move the wheel mounting surfaces out by 7/8" per side. These tend to cause tire rubbing problems on lowered cars while turning if the wheel offset isn't corrected to account for the wider mounting width. There are better solutions out there that don't move the wheels out nearly as much.
    56 Nomad, Ramjet 502, Viper 6-speed T56, C4 Corvette front and rear suspension


    Other vehicles:

    56 Chevy 2-door BelAir sedan
    56 Chevy 210 4-door sedan
    57 Chevy 210 4-door sedan
    1962 327/340HP Corvette
    1961 Willys CJ3B Jeep
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    Registered Member BamaNomad's Avatar
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    Quote Originally Posted by chevynut View Post
    Avoid the disc brake conversions based on the 68-72 Chevelle rotors as they move the wheel mounting surfaces out by 7/8" per side. These tend to cause tire rubbing problems on lowered cars while turning if the wheel offset isn't corrected to account for the wider mounting width. There are better solutions out there that don't move the wheels out nearly as much.
    Can you name / list a solution that you consider 'better'??

  9. #9
    Registered Member chevynut's Avatar
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    Quote Originally Posted by BamaNomad View Post
    Can you name / list a solution that you consider 'better'??
    No I can't, can you? I just know there are several of them out there and I have personal experience with the problematic Chevelle rotors. Lots of guys have rubbing problems with them when turning, and the car doesn't even have to be dropped to experience it. If the suspension compresses enough to "simulate" a 3" or so drop, the tires can rub at full lock. You can run into that turning hard into an elevated driveway, or something similar. It also depends on the width of the tires and the offset of the wheels.

    The point is, why mess with them when they widen the mounting surface so much and there are many known better options? Others here like Rick have a lot more experience than I do with disc brake conversions, as all of my recent tri5 work has been with C4 setups.
    56 Nomad, Ramjet 502, Viper 6-speed T56, C4 Corvette front and rear suspension


    Other vehicles:

    56 Chevy 2-door BelAir sedan
    56 Chevy 210 4-door sedan
    57 Chevy 210 4-door sedan
    1962 327/340HP Corvette
    1961 Willys CJ3B Jeep
    2001 Porsche Boxster S
    2003 Chevy Silverado 2500 HD Duramax
    2019 GMC Sierra Denali Duramax

  10. #10
    Registered Member chevynut's Avatar
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    https://www.trifive.com/forums/showthread.php?t=172693

    "Just getting my car back together and have a problem. I installed a CPP 5557SWBK-D with a 12-UG 2" drop upgrade kit. Running 225/50-17 tire on 17X7 4.5 backspace American Racing wheels. They are rubbing when I turn the wheels and I don't think there is anyway I can get the car aligned due to mounting alignment heads. The combination of the offset of the knuckles and the Chevelle style rotors moved the wheel to far out. Any suggestions? Will I have to replace knuckles or just rotors or install a different kit?"

    There's lots of posts like this complaining of rubbing problems with the Chevelle rotors. Note also that this is on dropped spindles, so Rick's statement that they're not used on dropped spindles is incorrect.
    56 Nomad, Ramjet 502, Viper 6-speed T56, C4 Corvette front and rear suspension


    Other vehicles:

    56 Chevy 2-door BelAir sedan
    56 Chevy 210 4-door sedan
    57 Chevy 210 4-door sedan
    1962 327/340HP Corvette
    1961 Willys CJ3B Jeep
    2001 Porsche Boxster S
    2003 Chevy Silverado 2500 HD Duramax
    2019 GMC Sierra Denali Duramax

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