speed cal help!

[Engel]

I have an older speedcal no instructions, and dallas mustang took the calculator down from the website (one that factored in tire size)

i have 3.73 gears (orig 3.08) 255/45/17 tires , can somone crunch those numbers for me

 

[dutch5.0]

3.08 to 3.73 = 1001101100

 

[Engel]

thanks man!

 

[dutch5.0]

np, check the speed with a gps or something though, I only got it off the internet too.