Automatic 3.23 to 3.73

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Mar 20, 2010 | 09:21 AM

Caribe

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From: League City, TX.

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.

Mar 24, 2010 | 02:47 PM

Caribe

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From: League City, TX.

anyone?

Mar 24, 2010 | 05:31 PM

01ssreda4

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From: Turnin' Wrenches Infractions: 005

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.

Mar 24, 2010 | 10:51 PM

pillarpod

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From: South Dakota

you don't have to

Mar 27, 2010 | 04:09 PM

Camaro Junky

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From: Schertz, Tx

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.

Mar 27, 2010 | 04:14 PM

the_merv

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From: The Beach...

Eventually you will want to adjust them Tables so it will run good.

Mar 27, 2010 | 04:17 PM

Squirts11

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From: OKC, OK

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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