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Automatic 3.23 to 3.73

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Old 03-20-2010, 09:21 AM
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Default Automatic 3.23 to 3.73
Will I have to change the shift speeds/rpm in the pcm if I am adding 3.73 gears, or just the speedo calibration. Car has 3.23 gears with a 3500 torque converter now.
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Old 03-24-2010, 02:47 PM
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anyone?
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Old 03-24-2010, 05:31 PM
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I ran mine for a month or more with the speedo off before I could get to my tuner and it was fine. No issues that I recall.
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Old 03-24-2010, 10:51 PM
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you don't have to
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Old 03-27-2010, 04:09 PM
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You will be fine, it just will get annoying. Mine will shift to early. But you can go from 3 - 4 and back. Get it changed when you have a full dyno tune.
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Old 03-27-2010, 04:14 PM
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Eventually you will want to adjust them Tables so it will run good.
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Old 03-27-2010, 04:17 PM
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It won't hurt anything, but until you get it tuned for the 3.73's your car will register more miles driven than it actually should (adds to the odometer quicker).
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