WANTED need speedo gear

[65 cuda]

need a speedo gear from a 78 chrysler cordoba 904 automatic transmission that had a 360 ci/ v8 motor bolted to it. idk if any v8 904 transmission from other mopars with same powerplant will work or has same gear teeth count
i am running 27 inch tall tires 245/60r15

 

[Kernel Sanders]

need to know the gearing in the diff as well to calculate the speedo tooth count you need for that tire

 

[65 cuda]

my gear ratio 3.55 and my tires are 245/60r15 27 inches tall

 

[savoy64]

35 teeth------there is a dodge/jeep speedo site---has all the gear ratios matched to tire heights...35.....PATC sells new speedo gears.....35......