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 Speedometer pinion gear

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Red Devil
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PostSubject: Speedometer pinion gear   Mon Nov 12, 2018 4:58 pm

Hi CCC,

I have the original 3.31 rear end gears with the a488 transmission — nut need to get the right speedometer pinion gear — my speedometer reads about 30% too fast.

The adaptors from PATC work well, but the angle is too extreme for the cable and it breaks after a few hundred miles. A 90 degree one could work — but needs to be custom speed reduction.

Does anyone have a line on speedometer pinions for a Torqueflite A488 or a custom 90 degree speedometer adaptor?

Thanks in advance all!
Happy motoring.
David.
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JAG
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PostSubject: Re: Speedometer pinion gear   Thu Nov 15, 2018 1:42 pm

James Rawa should be able to help. you will have to find him on facebook because he gets really busy and isnt on here too much

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Bluebird57
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PostSubject: Re: Speedometer pinion gear   Sat Jan 05, 2019 7:33 am

Back when I had the 413 put into my 57 I seem to remember there being places that could do long length cables for speedos. and there were longer shifter cables too... really saved my butt. I regret i cant remember the website names... worth a google perhaps? it might be on the forward look vendors liststoo.
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58belvedere
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PostSubject: Re: Speedometer pinion gear   Sun Jan 06, 2019 11:54 am


FORMULA FOR FIXING AMERICAN MADE CARS: Generally, American made vehicles with mechanical speedometers need 1000 cable revolutions per mile to make the odometer record correctly and the MPH to be accurate. Here's a simple formula for you to fix many American made car ratio problems. Conduct the 10 mile test, remove driven gear (the gear that spins your cable), count the teeth, and then multiply the teeth times the subtraction answer from the test. Call us at 1-800-592-9673 or 1-810-632-0400 and we will supply you with the correct gear or we will build a ratio adapter to fix the problem.

https://www.bobsspeedometer.com/1/120/ratio_adapter.asp


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