Speedometer gear

[Nacho-RT74]

Year one catalog doesn't have on its options the 255/60 R15 on the tires combo to the speedo gear...

what would it be the right speedo gear to 255/60 R15 3:23 axle ratio ?

supposelly around 27.5" diameter... I can't find a chart with tires size or diameter relation ship with gear number, color or size ( teeth quantity )

[John_Kunkel]

That tire is 27" in diameter and your combo calls for a 31 tooth pinion.

[Nacho-RT74]

I found finally an excel archive where it appears a calculatro ( I don't have a link right now but will post later ) Yes... you are right is 31 the one I need. I found today mine is 32 one. Not too much difference at least. I don't know if I will find the right gear locally, but at least I don't have too much to worry by the moments

[Nacho-RT74]

here is the excel archive:
http://www.moparts.com/Tech/tech/img/AUTOMATICchart.xls

as you can see, is from Moparts.

here is for manual tranny( 4 speeds ):
http://www.moparts.com/Tech/tech/img/4SPEEDchart.xls


links are to direct download

[71 Bee Man]

here is the excel archive:
http://www.moparts.com/Tech/tech/img/AUTOMATICchart.xls

as you can see, is from Moparts.

here is for manual tranny( 4 speeds ):
http://www.moparts.com/Tech/tech/img/4SPEEDchart.xls


links are to direct download

Does anyone know what happened to these links ? The auto page wouldn't come up - page missing or something.

Peter

[dspaulding70]

Where can you get the pinion gear?  I have tried the local dealer who said they were discontinued.  Any thoughts?

I need a 31 as well since I have the 255 and 3.23 combo.

[Ronnman]

click the links on this page.
Ron

http://www.moparts.org/Tech/tech/pages/speedo.html

[Nacho-RT74]

talking about webarcheology LOL...