What changes for 3.73 gears (Yes I Searched)
03-21-2006, 03:10 PM
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What changes for 3.73 gears (Yes I Searched) My friend just got a 98 trans am A4 with 3.73 gears (So he already started bugging me for free tune stuff since i can work on any 98). What do I need to change on HP Tuners for the gear swap. I took a quick look in HP Tuners and could only find something like axle revolutions per mph or something like that. Where and what do I do to make the changes for the gears? Thanks.
03-21-2006, 03:59 PM
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Originally Posted by 2xLS1
Under the Speedometer tab, enter 6.68 in the box under New. Make sure Auto Scale Transmission Tables is set to Yes. Click on commit. Save file. Flash file.
Is that for HP Tuners? All i have under speedometer is
VSS Pulses Per Mile
VSS Pulses Per Rev-Trans and
Trans Output Revolution per Mile
03-21-2006, 07:47 PM
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Originally Posted by 2xLS1
Under the Speedometer tab, enter 6.68 in the box under New. Make sure Auto Scale Transmission Tables is set to Yes. Click on commit. Save file. Flash file.
6.68 ?
When I switched from 3.23's I put 3.73 in the "new" Gear Ratio box and hit "commit", with the "Auto Scale Trans Tables" set to "yes".
Did I do it wrong ? I've been driving like that forever and the speedo is correct... Seems to shift correctly as well...
Rob (Bad30th)
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03-21-2006, 08:36 PM
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Originally Posted by 2xLS1
That is the size GM uses for all the stock F-body files whether they came with 16 or 17inch wheels. You'll see 24.91 or 24.94 in all the files that list the gear and tire size separate.
