700R4 Speedometer Drive Adapter

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johns87

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John
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1987
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k10
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5.7
I have an 87' with a 700R4. I recently replaced it and connected the speedometer cable thru the 90 degree adapter. The speedometer had been disconnected a few years back and it didn't work. Long story short traced it down to the adapter. I'm guessing the gears inside are shot as it will spin only on side.

I connected the cable straight to the transmission and now the speedometer works, but with out the adapter it is off. The adapter shows a 1:0.90 ratio on it. So, I started trying to find one and seeming pretty hopeless. I've seen a couple on eBay but seems pretty expensive.

Are there any other options? Oh here's an image what one looks like.

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4WDKC

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350
find the right gear for the tire size and gear ration you have. Install on the cable thing in the transmission.
 

yevgenievich

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sad
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I just sold one on eBay for $50 couple of weeks ago. But I think sometimes adapter got used when exact gear combo was not available. Maybe could find better matching spedo gears or change tire size
 

johns87

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k10
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I'll give that a shot then, I appreciate it.

I just wanted to make sure it wasn't needed for some reason I couldn't figure out.
 

Matt69olds

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I think I have that exact adapter with the ratio your looking for. Let me know if you still need it and I’ll post a pic
 

Matt69olds

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Well, crap. I do have that exact adapter. It’s obviously missing some teeth internally. When I turn one side of the adapter, there is a point in the other side where the rotation stops for about a 1/4 turn. Bummer
 

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