A833 Speedo Gear Drive Question

AJ/FormS said
Well slightly this and slightly that is an error of up to 5%.
And another 1/4 inch error is another .78 error in circumference.

Yup, I agree, a little bit here, a little bit there can throw things out a lot

AJ/FormS said
The point I was trying real hard to make,
was how prone to error your method is.

Yup, I totally know how its error prone, but Im not going to take apart a perfectly good diff just to find out what ratio it is for sure when its not absolutely necessary, and unfortunately, unless someone can tell me another way of finding out an aprox ratio, thats all I can do. I'm sure we all can agree that the 8 3/4 would be much more user friendly if it only had a cover on the outside like the other Mopar diffs. Dunno why Ma Mopar did that, Im sure theres some technical reason that I dont know about.

AJ/FormS said
Not the Chart, it is fine.

The program is rock solid. The program is sound.

AJ/FormS said
Whereas the Percent difference never doesn't work, and is accurate as your GPS app is at measuring a mile.

And thats why Im going to rely on @Dan Brewer 's expertise :)