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| Tocchi |
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are there any speedo cogs for a 3.45 to 3.73 change?
otherwise ill install the speedo corrector jaycar unit also, ive used that speedo calculator (in tech docos), but it says : -X% results in higher speedo value when car is going 100kmh -X% results in lower speedo value when car is going 100kmh so its contradicting itself. so which one is it? |
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| FordFairmont |
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Posts: 6113 Joined: 8th May 2007 |
i doubt theres any cogs for over 3.45
Jaycar unit is pretty straight forward and has been working well in my car for awhile now |
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| Tocchi |
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yeh ive made one
 its been sitting on my back seat for a good month, just a tad slack.
plus the 295s made the % almost zero, so i never bothered lol |
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| gogetta |
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are u running auto or manual trans?
_________________ |
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| Tocchi |
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auto. but the torque converter fried on the dyno today
so its gonna be manual soon |
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| Tocchi |
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sorry to bump this, but can anybody any answer this for me
Tocchi wrote: also, ive used that speedo calculator (in tech docos), but it says :
-X% results in higher speedo value when car is going 100kmh -X% results in lower speedo value when car is going 100kmh so its contradicting itself. so which one is it? |
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| FordFairmont |
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Posts: 6113 Joined: 8th May 2007 |
When you go from 3.45 to 3.73 your speedo will be reading 8.12% higher.
This means after youve fitted the 3.73 diff, when the speedo shows 100kph, you are really doing 91kph. When your speedo shows 109kph, you are really doing 100kph So you must use a speedo corrector to reduce the speedo figure by 8 percent to read correctly |
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