C6 speedometer drive gear needed

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BobbyFord
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Re: C6 speedometer drive gear needed

Post by BobbyFord »

Just go give them the number that I posted. It's a generic seal number.
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Re: C6 speedometer drive gear needed

Post by evan_flatt69 »

Well I got the end piece off. I found no evidence of a drive gear. But I did find that the yoke was a bit scratched and gouged up. The drive gear slide over the yoke and make contact with the driver gear correct?

Here are the pics:

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1969 F-100 Short Bed Custom Cab 390
1985 BMW 635CSi
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Re: C6 speedometer drive gear needed

Post by BobbyFord »

Should be a metal drive gear sandwiched between two of those spacer rings...
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Re: C6 speedometer drive gear needed

Post by evan_flatt69 »

Nothing is there. Nothing to be seen. Looks like I'll have to find one.
1969 F-100 Short Bed Custom Cab 390
1985 BMW 635CSi
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Re: C6 speedometer drive gear needed

Post by BobbyFord »

I've been doing some research and I think the short tailshaft C6 may use the same speedo drive gear as the T-18, T-19 manual transmissions. It sure looks the same...> http://www.ebay.com/itm/FORD-BW1356-BW- ... 49&vxp=mtr
I'm not sure how many teeth yours should have. See if you can determine how many teeth were on the chewed up gear and then refer to this chart...> http://www.fordification.com/partnos/sp ... 4spd01.htm depending on your tire size and rear end gear ratio.
Or...these guys should be able to help you get what you need...> http://www.transmissioncenter.org/Ford_ ... _Gears.htm
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Re: C6 speedometer drive gear needed

Post by evan_flatt69 »

Thanks for the info Bobby. Looks like I'll need a 7 tooth drive gear if I'm going to try it. The gears being plastic on metal shouldn't hurt should it? And how exactly does it stay in place?
1969 F-100 Short Bed Custom Cab 390
1985 BMW 635CSi
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Re: C6 speedometer drive gear needed

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evan_flatt69 wrote:Thanks for the info Bobby. Looks like I'll need a 7 tooth drive gear if I'm going to try it. The gears being plastic on metal shouldn't hurt should it? And how exactly does it stay in place?
The drive gear goes in between the two rings on the shaft and the yoke and nut hold it all together.
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Re: C6 speedometer drive gear needed

Post by evan_flatt69 »

Hmm. Only one ring.. I can probably make one
1969 F-100 Short Bed Custom Cab 390
1985 BMW 635CSi
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Re: C6 speedometer drive gear needed

Post by 70_F100 »

Looks like they left the drive gear out and the yoke got against the driven gear. Hopefully, the extra end play the output shaft would have had didn't mess up any internals.

The P/N for the driven gear for a 69 is C5TZ 17285-C (8 teeth) for about all rear axle ratios and tire sizes. Green Sales has one: http://www.greensalescompany.com/ Let me know your ratio and I'll verify that this is the correct one.

Can't really tell which driven gear you have, but it looks like either 18, 19 or 20.

18: 01T 17281-A
19: 01T 17281-B
20: 01T 17281-C

Couldn't locate any of these under those numbers, but the numbers may have been superceded.

Hope this helps!!
Wise men talk because they have something to say; fools talk because they have to say something.--Plato
Why is it that there's seldom time to fix it right the first time, but there's always time to fix it right the second time???

That's not an oil leak :nono: That's SWEAT from all that HORSEPOWER!! :thup:
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Re: C6 speedometer drive gear needed

Post by evan_flatt69 »

Thanks for the lead 70_F100! I tried calling them today about ordering it but I guess they're closed for the 4th of July. I'll try again tomorrow.
1969 F-100 Short Bed Custom Cab 390
1985 BMW 635CSi
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Re: C6 speedometer drive gear needed

Post by 70_F100 »

Before you order it, let me know the rear end ratio and tire size so I can verify that's the right one!!
Wise men talk because they have something to say; fools talk because they have to say something.--Plato
Why is it that there's seldom time to fix it right the first time, but there's always time to fix it right the second time???

That's not an oil leak :nono: That's SWEAT from all that HORSEPOWER!! :thup:
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Re: C6 speedometer drive gear needed

Post by evan_flatt69 »

Oh right! it's open 3.25 and 27.5" tires
1969 F-100 Short Bed Custom Cab 390
1985 BMW 635CSi
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Re: C6 speedometer drive gear needed

Post by 70_F100 »

That should be correct for the drive gear, then. :thup:
Wise men talk because they have something to say; fools talk because they have to say something.--Plato
Why is it that there's seldom time to fix it right the first time, but there's always time to fix it right the second time???

That's not an oil leak :nono: That's SWEAT from all that HORSEPOWER!! :thup:
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evan_flatt69
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Re: C6 speedometer drive gear needed

Post by evan_flatt69 »

Thanks for the help guys! I ordered the gear today and it should be here monday. 65$ shipped. Kinda hurts but I was just surprised to find one
1969 F-100 Short Bed Custom Cab 390
1985 BMW 635CSi
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Re: C6 speedometer drive gear needed

Post by BobbyFord »

Sweet! :thup:
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