1993 Camaro speedo calibration
#1
1993 Camaro speedo calibration
I am about to have a 3.73 gear installed on my 93 Z/28 and I don't know how to have my speedo calibrated for the change. I'm changing from a 3.23 to a 3.73 if that makes a difference.
#3
Re: 1993 Camaro speedo calibration
93 is the only year you can't recalibrate with a computer reprogram.
As far as I know, you have to change the gear that drives the VSS with the 4L60 automatic, and use an external calibration box like the Dakota Digital SGI-5 for the T56 manual.
https://www.camaroz28.com/forums/dri...speedo-299267/
As far as I know, you have to change the gear that drives the VSS with the 4L60 automatic, and use an external calibration box like the Dakota Digital SGI-5 for the T56 manual.
https://www.camaroz28.com/forums/dri...speedo-299267/
#4
Re: 1993 Camaro speedo calibration
I did exactly the same gear change years ago. The dealer told me that they could recalibrate the speedo. after the gear change they informed me they could not. I had to install an Abbott Electronic Ratio Adapter. It fixed the speedo, but the cruise control and ABS are not operating properly. I am looking for a set of NOS GM 3.23 ring & pinion to replace the 3.73 set. I have always had better luck with GM gears as opposed to the aftermarket. Good luck.