Speedo adjustment for new gears
#1
Instructor
Thread Starter
Speedo adjustment for new gears
I recently went from 308 to 355 gear ratio. The stock speedo drive gear in the T350 has 21 teeth. I went up to 22 teeth and it appears the speedo is even further off?
Any knowledge shared would be appreciated
Any knowledge shared would be appreciated
#2
Le Mans Master
Member Since: May 2002
Location: Lebanon Township New Jersey
Posts: 5,005
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Re: Speedo adjustment for new gears (colorado1967)
You went in the right direction by increasing toothe count. You need to slow the speedometer down. I recently changed from 3.08 to 3.73 and changed the speedo gear from 21 to 25. I might need a 24 to make it accurate. You should be close with 22, maybe 23. In any case, due to differing tire diameters, its not an exact science.
#3
Race Director
Re: Speedo adjustment for new gears (colorado1967)
There was just a post on this the other day.. I found this site to be semi helpful...http://www.tciauto.com/tech_info/speedo_gears.htm#350
The one in the post was:http://www.bgsoflex.com/speedo1.html
I'm still trying to figure out my speedo ger issue as well... mine's showing that i'm about 10mph faster than what I'm really going...
The one in the post was:http://www.bgsoflex.com/speedo1.html
I'm still trying to figure out my speedo ger issue as well... mine's showing that i'm about 10mph faster than what I'm really going...