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Post Info TOPIC: Speedo driven gear change


Addicted!

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Speedo driven gear change


Not sure of category

Speedometer is out 50% roughly need driven gear change in housing.

TH 350- 3.55 ratio- 27.4 In tire diameter.

Looks like change to light green 34 tooth driven gear, not sure of drive gear tooth count?????????????

Any help or charts available or anyone who has made change for accuracy.

Would be cheaper than going to aftermarket electronic GPS Speedo.

 

Thanks



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Addicted!

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Posts: 437
Date:

Thanks for that, I saw that on TCI site, will have to do some math.

L



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Canadian Poncho Superstar!

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There's also a place in Florida that advertises an adapter for speedo cable, they say just tell them how far it's out, that's all the info they need!!! I'll see if I can find the add!!!!

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Some times I wake up GRUMPY, but today I let her sleep in    !!!!!!!! BLACKSTOCK Ont.



Guru

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Posts: 634
Date:

Beau 69 wrote:

Not sure of category

Speedometer is out 50% roughly need driven gear change in housing.

TH 350- 3.55 ratio- 27.4 In tire diameter.

Looks like change to light green 34 tooth driven gear, not sure of drive gear tooth count?????????????

Any help or charts available or anyone who has made change for accuracy.

Would be cheaper than going to aftermarket electronic GPS Speedo.

 

Thanks


 http://www.bgsoflex.com/speedo1.html

Been using this one for years and it works good for me.

 



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1967 Beaumont Custom

Canadian Poncho Supporting Member



Addicted!

Status: Offline
Posts: 437
Date:

67custom wrote:
Beau 69 wrote:

Not sure of category

Speedometer is out 50% roughly need driven gear change in housing.

TH 350- 3.55 ratio- 27.4 In tire diameter.

Looks like change to light green 34 tooth driven gear, not sure of drive gear tooth count?????????????

Any help or charts available or anyone who has made change for accuracy.

Would be cheaper than going to aftermarket electronic GPS Speedo.

 

Thanks


 http://www.bgsoflex.com/speedo1.html

Been using this one for years and it works good for me.

 


 That table is what I was looking for ....  Thanks  Helps a lot.



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Guru

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Posts: 566
Date:

Just an FYI, as of a few years ago the local Chevrolet dealer parts department could still get the gears. If I remember correctly, they were around $7 US each.
James

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1968 Beaumont SD396 

Laurens, South Carolina

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