speedo gear

[moparduster]

How many teeth are on the drive gear for a 727? Im trying to find a speedo gear for the dart but all the calculators im finding you need to know the drive gear teeth.

 

['64 Cuda]

I think all you need to know is if it's the 65 & earlier style (hard to find a speedo gear for) or the 66 through 79(?) easy to find style speedometer drive/transmission. This info along with the tire diameter & rear axle ratio should be all that's necessary to get the right gear.

 

[Purple Haze]

Look on Ebay under Mopar speedometer gear, you will find peep's selling gears and some will have a conversion table.

 

[fishy68]

There is no drive gear per say. The output shaft has the teeth cut on it to drive the speedo gear. Here's a speedo gear chart. Sorry about all the dashes and periods. That's the only way I could get it to post anywhere close to right. If you have trouble making it out ask me and I'll help.

Rear Tire Diameter

...............24"--25"--26"--27"--28"--29"--30"--31"--32"--33"

Gear ratio

2.76 teeth 30---29---28---27---26---25---24---* * *


2.94 teeth 32---31---30---29---28---27---26---25---24---*


3.23 teeth 35---34---33---32---31---30---29---28---27---26


3.55 teeth 39--38/37-36---34---33---32---31---30---29---28


3.73 teeth 41---40---38---36---35---34---33---32---31---30


3.91 teeth 43--42/41-40---38---37---36---35---34---33---32


4.10 teeth 45--44/43-42---40---39---37---36---35---34---33


4.30 teeth *----*----44-43/42-41---39---38---37---36---35


4.56 teeth *----*----*----45--43--42/41--40-- 38---37---36