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'64 727 speedo gears

Dave145

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Howdy!

Over the winter I swapped my old 2.76 rear gears out for some 3.23s in my '64 Polara. Along with that territory is replacing the speedo gear. Currently my speedo read 20mph high. I believe I have a 16 or 17 tooth pinion in there currently.

Chrysler charts show that I need a GREEN 20 tooth speedo gear. I have searched the web pretty intensely and have come up empty handed. I think brewsterperformance.com shows them, but say they are out of stock.

I know these gears are hard to come by, and I know finding one is like a needle in a hayfield, but does anybody here have one they would part with?

I would have put this in the classified section, but I figured I'd post it here because we are the only group that uses these gears.
 
Just for a reference they look like this.

20170516_165432.jpg

20170516_163628.jpg
 
how can you change one gear and not the other?
I'm lost on this change.
 
how can you change one gear and not the other?
I'm lost on this change.

Yea, there's no index wheel like the newer models. Somehow it works. I changed mine when I installed the 3:23 and it works!
i-dont-know-smiley-emoticon.gif


Here's a 17 tooth (on the left) and a 19 tooth (on the right). Someone knew what they were doing back then, all you have to do is swap them out.
20180514_101335.jpg

20180514_101328.jpg
 
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