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Thread: UNDERDRIVE PULLEY and CHIP

  1. #1
    Join Date
    Jan 2003
    Posts
    164

    Cool UNDERDRIVE PULLEY and CHIP

    Hello,
    My name is Roger and I'm a "nebie" to this forum.
    I owned a 90 SC about 7 years ago but sold it.

    I'm picking up another SC on Monday and had a question.
    I've heard about "underdrive pullys and performance chips".
    I'm thinking about these upgrades along with Flowmaster dual exhuast.
    1) Are these performance mods "sanctioned" by Ford?
    2) I hear they up the boost on the Supercharger, is this hard on the unit or blow out seals hard on the engine etc.?
    3) It's "supposed" to up your HP to 250hp, is this an atteanable goal?
    4) Can (or will) Ford install these mods?

    I live in California so will this be a "no-no" for smog laws?

    Has anyomne on the list done these mods AND what was the outcome?
    Whats the cost of each part?

    Thanks
    Roger

  2. #2
    Join Date
    Jun 2002
    Posts
    1,599

    Re: UNDERDRIVE PULLEY and CHIP

    Originally posted by wwotr
    Hello,
    My name is Roger and I'm a "nebie" to this forum.
    I owned a 90 SC about 7 years ago but sold it.

    I'm picking up another SC on Monday and had a question.
    I've heard about "underdrive pullys and performance chips".
    I'm thinking about these upgrades along with Flowmaster dual exhuast.
    1) Are these performance mods "sanctioned" by Ford?
    2) I hear they up the boost on the Supercharger, is this hard on the unit or blow out seals hard on the engine etc.?
    3) It's "supposed" to up your HP to 250hp, is this an atteanable goal?
    4) Can (or will) Ford install these mods?

    I live in California so will this be a "no-no" for smog laws?

    Has anyomne on the list done these mods AND what was the outcome?
    Whats the cost of each part?

    Thanks
    Roger
    1.no(you have no warranty anyways)
    2.overdrive supercharger pullys boosts manifold pressure, not under-drives(only a problem on the engine if driven hard)
    3. yes
    4. yes for lots of money
    yes it will pass emissions, but uou might have to remove the chip before testing if it isnt C.A.R.B approved, or if you remove the catalytic convertors

    Yes, you will have lots of low end torue

    Under-drives are about 200$US and 75$US for overdrive pulley and about 200-300$ for chips (the overdrive pully will do more than any off the shelf chip will...more power from pulley)

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