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- - speedo question (https://67-72chevytrucks.com/vboard/showthread.php?t=724515)

l79m20

12-10-2016 05:03 PM

speedo question

What color does the speedometer gear need to be for an inline 250 with powerglide, gear 3.08 ?

Palf70Step

12-10-2016 07:21 PM

Re: speedo question

It depends on what gear they put on the transmission output shaft. It normally is a 7 or 8 tooh from what I have seen. If it is 8 tooth it, it will probably be around an 18 tooth gear depending on what size tire you are running.

l79m20

12-10-2016 10:01 PM

Re: speedo question

I'm running an original set of 15 inch wheels and 205/75/r15 which is comparable to 775/15.

PGSigns

12-10-2016 10:09 PM

Re: speedo question

Here is a good set of calculators.
Jimmy
http://www.tciauto.com/tc/speedometer-gear-calculator/

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