Speedo calibration dip switches

Thanks for all the help. I finally got the formula correct and now my speedometer is correct!

 

I have a 97pete 377 trin to find the dip switch code it's got the 12.7 Detroit 11 22.5 tries 3.55 rears that we put in it it had 3.90 rears befor

 

Trin to find out the # for the dip switch on my 97 it's got 11 22.5 tires an 3.55 rears

 

I have the same tire size and same 3.36 gears but not good with math. What setting did you come up with?

 

I doubt you’ll get a response from that poster. If my math is right you’ll be 226 on the chart he posted.

 

Thank you sir