Overdrive ratio parameter

[myburb]

I have 94 suburban with 6395/OE/BDHF. there is a parameter "overdrive ratio" with a number of 42.686. I assume it is used in some calculation. Anyone know what that represents? It does not directly represent the overdrive ratio.

[myburb]

Found it in a hac so all is good.

[buddrow]

Would you mind sharing what you found? I'm curious but don't have time to dig into the hack.

Buddrow

[myburb]

Without going through all the calcs and filters, take your tire revs per mile and multiply by your rear ratio and then divide by 60 and that is the n
umber you put inthe box.