Speed gear?

[HemiPar]

Hey all. My speedometer is off due to larger tires. I found new gears at year1 kinda costy. I hope to find the color I need at the yard later. But how can I foind out what gear I need? I know the different colors have different teeth count.
I have a stock 904, 8 1/4 rear with 3.21, and tire size is 225-60/15. Thanks for any help.

 

[Demon 408]

A 33 tooth gear is best for your set up, but a 32 will be close if that's all you can find. There are various charts and calculators on-line that you can use to determine the correct speedometer gear. Also, look for used gears in the For Sale section of FABO.

 

[Divenut]

May want to try Ebay. I found one there at a reasonable price.

Pat

 

[Darter6]

See if anyone around you(if you don't have one)has a Year One catalog. They print a chart with tire size,gear ratio, and number of teeth needed for different applications. You may even find it on line. Tranny companies like Passon,Cope,Brewer's etc. carry them. I know Passon has them for sure.New and used.

 

[burdar]

I got mine on ebay for $15. That's a lot better then the $80 the dealer wanted.

 

[stansblue72]

Here's a chart.

 

[HemiPar]

Thanks for all the help guys. I hope to find a used one. Year1 wants $115 and I didn't even think a dealer would still have them. Hope to have one soon. Even thou I can use the GPS I'd rather not have that on the windshield around town. Again, thanks for the help.