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What was the standard speedometer gear ratio for a 200-4R inside a 1985 Delta 88?

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Old May 11th, 2016, 03:04 PM
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What was the standard speedometer gear ratio for a 200-4R inside a 1985 Delta 88?

I took the governor, including the speedometer drive gear and the driven gear from that vehicle to put into my Vista Cruiser's 200-4R, but I didn't remember the number of teeth it had when I installed it. I think it had a white drive gear with 13 teeth because I tried to look inside the speedometer drive access hole without taking the transmission pan off, but it was hard to be sure if it's a discolored white drive gear or a faded orange that would have 11 teeth. My driven gear is black and has 27 teeth, but right now the whole set-up makes the speedometer and odometer read about 11% too fast.

My rear axle ratio is 3.08 and my tire rolling diameter is about 25.125".

Also, when I reached in to touch the driven gear, I could turn it with my hands on the governor shaft. Should that be permanently located somehow, so there is no slipping between the shaft and drive gear?

Thanks, Tom
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Old May 19th, 2016, 09:08 PM
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wobble at drive shaft yoke normal?

I still haven't dropped the pan to see what number of teeth my drive gear (from a Delta 88) has and why it seemed to be slipping on the governor shaft, but I went ahead and installed a 29 tooth drive gear for $13 based on the 11.5% error I saw on my speedometer. I just did the test drive and the speedometer now indicates dead accurate. Now, I still have one main issue to resolve. A soft or lazy or flare shift from second to third gear. I read a few threads online that suggest a problem with the length of the servo pin, but still hoping somebody with specific 200-4R experience has more advice.

So far, I love this transmission and to think I researched, found and rebuilt one of these within one year of buying my Vista Cruiser, I couldn't be much happier. One thing that does make me a bit nervous is some vibration above 60-70mph.

I checked underneath and the only thing that seems a little unusual is that I can slightly wobble the drive shaft yoke inside the transmission end bushing. Is this normal?...

Thanks, Tom
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