Engine/Transmission (1994 - 1998) Going 3:73 from 4:10

[JStoll]

I scored a thin 3:73 R&P on ebay for $100 shipped ... was a little dinged up because it wasent packed up well but I was able to clean it up to my liking ....
I found master install kits on amazon with Koyo bearings for $200 ... has shims, bolts, seal, nut, loctite, yellow grease and bearings ofcourse... 4.125 Im good with that ... does anyone know what spedo sensor drive gear I use with the 3:73 gears? are they color coded? .. when I put the 3:73s into my first gen I changed the gear for the spedo but that was 12 years ago and I dont remember about it any help would be greatly appreciated

JAK

 

[GAmes]

It is a little simple math. 3.73 is 10% different. If your gear has 30 teeth you need one with 27.

 

[JMcCoy]

What year is your truck? If you have the tone ring in the rear axle, you don't have to change anything. Just reuse the same one.

 

[JStoll]

my truck has both the speed sensor for the spedo in the trans and the sensor in the rear axle for abs...
thanks for your help... i was over complicating it
Jak

 

[RWherley]

i could be wrong here cause what i know is for first gens but, when i changed the gears in my truck i had to change the speed -o- meter drive adapter on the transfer case, no the actual drive gears the tone ring in the rear was for the ABS only. I found out the hard way when my speedo said 70 put the GPS said said 91