WTB need speedo gear

[65 CUDA]

need a speedo gear from a 78 chrysler cordoba 904 automatic transmission that had a 360CI/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

 

[Kern Dog]

The speedometer gear you need depends on a few more bits of information.
You need the rear tire size and the axle ratio.
Some of the cars from the 70s came with anything from a 2.2 ratio to a 3.55. HUGE difference.

 

[Car #4]

I have a 25 tooth if that's what you need.

 

[65 CUDA]

it has 3.55 gear ratio and my tire are 27 inch tall and i a running 245/ 65r15 tires

 

[Car #4]

You need a 34 tooth gear.
You can see your tire height here. https://tiresize.com/calculator/
You can calculate which gear you need here. http://www.mymopar.com/speedometer.htm

 

[65 CUDA]

what happens if i run yellow gear for speedo instead of red

 

[Car #4]

I just noticed there doesn't seem to be a 34 tooth gear. Yellow would be more accurate than red.