Calculating for speedometer gear

[727]

Can someone direct me to where I may find a chart to pick the correct speedometer gear for my car?

25" diameter tires, 3.23 rear gears, and a 727 with 1-1 final drive.

Thanks
727

 

[moes]

here you go, you will need a gear with 34 teeth. 727 34 Tooth Green Speedometer Gear (1966-Up)