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200 mph speedo conversion ???

This is a discussion on 200 mph speedo conversion ??? within the Camaro / SS forums, part of the Vehicle Specific category; is it hard to calibrate the granatalli 200 mph speedo or does it come calibrated and if not cal how ...

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    -S-howtime -S-teele (SS) showtimesteele99SS's Avatar
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    Exclamation 200 mph speedo conversion ???

    is it hard to calibrate the granatalli 200 mph speedo or does it come calibrated and if not cal how do i and is it hard>
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    UberTapping Friction Pimp Anthracis's Avatar
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    http://www.granatellimotorsports.com/gm200mph.htm

    If you see bullet number 4, it states ...calibrated to factory specifications.

    It should go right in. 30 mis or so.

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    -S-howtime -S-teele (SS) showtimesteele99SS's Avatar
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    but how, my car is only a 150 or w.e how does it jsut do that ..and i thought that i read you need to take it there for calibration

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    UberTapping Friction Pimp Anthracis's Avatar
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    18D Cock Diesel
    1999 Z28; 98 SS #2043 RIP

    I think that is only if you have a different gear ratio adn/or different wheels. I think that the speedo just bolts right up. The calibration should be the same, it just goes down further? But I am not positive on this. It says calibrated so it should bolt right up...you could call their 800 number and find out in the morning too.

    BTW, I pm'ed you with answers too.

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    Member SLP02SS's Avatar
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    It says you have to send them your factory cluster, i wonder how long it takes to send it out and get it back....

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    Story of My Life!! BIG D's SS's Avatar
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    no more 4th gen secondgearscratch's Avatar
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    when you get up into the 100s there are so many variables that throw off speed reading. the speedo probably isnt accurate anyway. and who cares, anything after 150 is pretty gd damn fast so unless youre at the track, why would it matter how exactly fast youre going?
    heres pic of me doing 150......


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    -S-howtime -S-teele (SS) showtimesteele99SS's Avatar
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    lol i just want my speedo to read 200 i think it would look sick lol i dunno i only been 130 in my ss anyway and plan on keepin that way but i just think it would look good .. . to me atleast

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    Senior Member greatwhiteZ28's Avatar
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    here is a good way to do that. listen.

    when reinstalling the needle of just the SPEEDOMETER wind back the gear on the cluster soo on your stock 150 when doing 50mp you modifly it soo your doing like 35ish soo when you put on your 200mph, just retard your needle till its correct. have some one drive next to you from dead stop to like 75. it will take some time soo leave the lens off and plasic pce off soo mods will be a lot easyier. i had to do that my first time doing wht face gages .. IT WORKS

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