Roush 3:73 vs my Speedo

Discussion in 'Special Production' started by SKUNK160, Mar 9, 2004.


  1. SKUNK160

    SKUNK160 Founding Member

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    My S281 has 3:55's from Saleen....so if I fit 3:73's in back how much will my Speedo be out? and what would Saleen have done to correct the speedo reading when the 3:55's went in?

    Do I need a third party correcting device like the Dallas Mustang’s SpeedCal?

    Thanks
    #1
  2. Rich Motta

    Rich Motta New Member

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    it needs to be recalibrated...i do not know who does them. your car will be collecting miles a bit faster then it should if you do not get it calibrated.
    Rich
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  3. ponyguy

    ponyguy New Member

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    i always wondered, what did saleen do to correct for the 3.55's?
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  4. Head Paneer

    Head Paneer Founding Member

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    I am not sure what Saleen does for pre ’99 cars but on all the late models, the correction is made in their flash program. I plan to move from the current 3.08s up to 3.55s. If I send my computer into Saleen, they will make the gear change for $50.
    #4
  5. ponyguy

    ponyguy New Member

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    anybody know about the pre 99 cars?
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