SeaBeeChuck
Junior Member
Hi folks, need some knowledge. I just finished a rear axle swap on my 2003 3500 dually 4X4 due to the total meltdown of the axle tube caused by bearing failure. Since I am no longer pulling my 40 ft 5th wheel Rv heavy and have downsized I replaced the original 4:10 with a 3:73 I will be swapping the front drive shortly. My question is does my computer have to be changed for the new gear ratio and if so is it a dealer job? Neither my Hypertech or my Edge are giving me the option to change the ratio. Any help would be appreciated. Currently it seems like the shifts are coming in to early especially the overdrive at around 1k rpm’s. Also will the new gear ratio affect the speedometer? Thanks
Chuck
Chuck