I was wondering what gears would put my truck back to stock with the 37's. I talked to my local dealer and they said they can only set the spedo up to 35's. I would like to get the spedo close to stock and regain all the power i lost when i bolted on the tires, maybe even a little more. o ya, i have 3.73 now Thanks for the info

 

4.30 gears will be as close to the stock effective gear ratio as possible.
You'll need the Superlift Truspeed to recalibrate the speedo though. Don't think they have them for the '03 yet though.


Hope this helps.