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speedo gear ?

3529 Views 11 Replies 5 Participants Last post by  Bogie
yard 2nd napa discount &autozone all say go to a dealer well i call the local dodge dealer and they say we dont go back that old well that bs if you ask me :mad:
so were can i get one id like to have a speedo ???
also id like to make sure is accurette so i have a np435 tranny np205 tcase and 4.10 gears with 33x12.50 tires when i can buy a new gear should what sould i ask for ???
and just one more? what other years did the 205 come in besides 74 and will a speedo gear out of a ford(yea i said ford) 205 work???
well thanks for the help
richard 8)
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ford ones shoudl work if i remember correctly
This is a copy of the 74 parts book with the pinion gears for the speedo. You might want to print it out. I have no idea which one you need.

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alright but as far as the tire size goes is it refereing to width and rim size???
mopar-man 3000 said:
alright but as far as the tire size goes is it refereing to width and rim size???
No..it's the actual rubber tire size stamped on the side.
They are refering to the thin strap that often gets buried in the crack of your butt. Rim size of course refers to the inner rim. With a proper rim measurement you may avoid surgery to remove that strip. Remember not to wear white pants, and always wear a belt with that speedo thong of yours.
Bogie said:
The ones listed at Year One will not work in this truck. The pinion is all metal and has NO colored gear. The pinions at Year One fit into the tranny, on the 4x4 truck the pinion fits into the transfer case. The correct one looks just like the picture in the parts book I posted.:)
Doh !!
i was wonder if i could put a speedo gear in the tranny i dont care if the speedo is right when im in 4xright if i can i know were to get one how many teath would i need to get the speedo right???
mopar-man 3000 said:
i was wonder if i could put a speedo gear in the tranny i dont care if the speedo is right when im in 4xright if i can i know were to get one how many teath would i need to get the speedo right???
You cannot install one in your transmission. Follow your speedometer cable back to the transfer case, remove the cable and then remove the speedo gear. Count the teeth on it so you know what you have. Then use the above chart to convert the tire size(height) to something close to yours. I don't know if Mopar can still order these pinions. You might also consider going to an instrument/speedometer repair shop and ask them what they can do to calibrate your system.
This place has some good info on tire size,etc.
www.tirerack.com
Ok I think I found the right ones
www.transmissioncenter.net/dodge.htm
about half way down the page even has a calculator to determin proper size gotta call as my speedo is off.

Chump on a side note do you have a parts diagram for a 1984 D60 lockout hub?
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