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-   -   Speedo Trouble (https://67-72chevytrucks.com/vboard/showthread.php?t=368449)

bums 10-22-2009 10:00 PM
Speedo Trouble
 
I have just bought a 78 chevy 4x4 1/2 ton with a 203 transfer case. It seems
to be a good truck. One of the few problems with it is the speedometer does not work. After some investigation found the problem to be the speedometer gear. It has 22 teeth and has the letter "M" stamped on the shaft. I have been to several 4x4 shops and can not find one. Does anyone know where I
can get one? New or used

72blue 10-23-2009 01:58 AM
Re: Speedo Trouble
 
stuff like that I have to resort to the junk yard.

special-K 10-23-2009 06:00 AM
Re: Speedo Trouble
 
Junkyard,4wd guys like here on this site,and i`m thinking thedealership would have it.do you still have yours?they vary by rear ratio.They are color coded,I believe,by ratio.

OrrieG 10-23-2009 12:24 PM
Re: Speedo Trouble
 
Quote:
Originally Posted by bums (Post 3581856)
I have just bought a 78 chevy 4x4 1/2 ton with a 203 transfer case. It seems
to be a good truck. One of the few problems with it is the speedometer does not work. After some investigation found the problem to be the speedometer gear. It has 22 teeth and has the letter "M" stamped on the shaft. I have been to several 4x4 shops and can not find one. Does anyone know where I
can get one? New or used
I found mine at the Chevy dealer parts counter. I need to change the gear to compensate for my tire size, rear end and stock 59 speedo. It was like $5 or less if I remember right.


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