caliper swap standard duty to heavy duty
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, caliper swap standard duty to heavy duty in Past Cadillac Vehicle Discussion; 91 Deville jm4 standard brakes thinking to attempt a swap to j55 HD calipers I know the master cylinder is ...
  1. #1
    DEVIL~le's Avatar
    DEVIL~le is offline Cadillac Owners Member
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    91 Deville jm4 standard brakes thinking to attempt a swap to j55 HD calipers I know the master cylinder is different but j55 is also non-abs the abs should protect against wheel lock and wheel speed what's your thoughts

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    Submariner409's Avatar
    Submariner409 is offline If it won't run, stick on fender vents
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    Re: caliper swap standard duty to heavy duty

    deleted.

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    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
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    You can get better braking cheaper and easier by getting a set of performance pads.

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    DEVIL~le's Avatar
    DEVIL~le is offline Cadillac Owners Member
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    I'm going with power slot rotors and hawk pads but I cant get the standard calipers powder coated

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    MoistCabbage's Avatar
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    Why not?

    In any case, there's always caliper paint.

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    DEVIL~le's Avatar
    DEVIL~le is offline Cadillac Owners Member
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    The vendors I deal with only powder coat the HD ones could buy standard ones and sent them out but cost 100 more each

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    MoistCabbage's Avatar
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    Oh, I thought you just wanted to powder coat the old ones. The HD brakes use different rotors. For the money you'd have to spend on them, you could have the standard ones coated for not too much more (or look into a home kit).

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    drewsdeville is offline Cadillac Owners Master
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    Re: caliper swap standard duty to heavy duty

    It would probably be more beneficial to look into swapping those small rear drums out for some discs. Performance brake pads or HD calipers on the front will result in a negligible change

  10. #9
    DEVIL~le's Avatar
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    The number for powerstop red powder coated caliper is S4020 I took the acdelco # and traced it to the same option on the 91 Fleetwood

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    Re: caliper swap standard duty to heavy duty

    Quote Originally Posted by DEVIL~le View Post
    91 Deville jm4 standard brakes thinking to attempt a swap to j55 HD calipers I know the master cylinder is different but j55 is also non-abs the abs should protect against wheel lock and wheel speed what's your thoughts
    Why? Are you having trouble stopping?

  12. #11
    DEVIL~le's Avatar
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    No not yet but going to put 20's on it and my car is just been dynoed at 225hp-335t to the wheels already doesnt like sitting at a light

  13. #12
    MoistCabbage's Avatar
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    What? What did you do to it??

  14. #13
    DEVIL~le's Avatar
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    Guy at a speed shop reprogrammed my EPROM while dynoing it he had it for 2 days

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    MoistCabbage's Avatar
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    No way he got 225 to the wheels from an engine that only produces 200 at the crank, from any kind of program/tune.

  16. #15
    DEVIL~le's Avatar
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    Tuner cat I think but I have a dyno print out

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