Speedometer Teeth?
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Elder User
Joined: Apr 2004
Posts: 519
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From: Comfort, TX
Speedometer Teeth?
Okay folks, here is a tough one. I am putting an aftermarket pulse sender into my C4 tranny (long story). Bottom line is it does not have a gear in the tail unit at this time. How many teeth do you think I should get for the plastic speedometer gear? I will be using a adjustable speedometer.
Thanks,
Thanks,
Senior User
Joined: May 2007
Posts: 190
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i thought the speedo gear was machined on the output shaft.
on this site there is a speedo calculator.
hope this helps
http://www.tciauto.com/Products/Tech...eedo_gears.asp
on this site there is a speedo calculator.
hope this helps
http://www.tciauto.com/Products/Tech...eedo_gears.asp
Thread Starter
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Elder User
Joined: Apr 2004
Posts: 519
Likes: 0
From: Comfort, TX
No, there is a worm gear on the output shaft and the plastic speedometer gear meshes with it when the unit is inserted into the hole on the tail shaft housing. Thanks for the help.
Cargo Master
Joined: Jun 2003
Posts: 2,982
Likes: 7
From: Somewhere Saskatchewan
The worm gear is the speedometer drive gear.
It can have 6-7-8-or 9 teeth and is not replaceable.
As for driven gear specs you may have to experiment.
You will need, tire size, differential ratio & drive teeth count.
It can have 6-7-8-or 9 teeth and is not replaceable.
As for driven gear specs you may have to experiment.
You will need, tire size, differential ratio & drive teeth count.
Last edited by stuart1; Aug 11, 2007 at 08:05 AM.
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