My Luxurious late model truck (not so much)

[Tx Firefighter]

Originally Posted by 83GMCK2500

I know I was very pleased with the RPM drop I experienced in my '83 (same gearing as you), I hope you will be too. Fortunately for you there is a (relatively) easy way to correct your speedometer. With your previous experience with these trucks I would not doubt that you are familiar with modifying the DRAC, but if you are not: GM DRAC/VSSB Calibration

I was very hazy on DRAC calibration. After reading the article you linked for me, I'm ordering a 7 position DIP switch. Game on.

Looks like I'm a 1010110 kind of guy.

Edit: parts ordered from eBay. I can pay 3.25 and do a little soldering to have a correct speedometer/odometer to go with these tall tires.



Thank you for the continued help Devin.