Now that I have my '78 back on the road, it would be helpfull to know how fast I'm really going :cool: I went from 2.41 gears to 3.73 and of course the speedo doesn't read ANYWHERE close to the right speed.
My question(s) is, do I need to change both speedo gears, or just one? If just one, which one? Can I use gears off a 700R4, would those work on my th350?

Read this information:

http://home.hiwaay.net/~ppatter/speedo_correction.html

and this:

http://www.bgsoflex.com/speedo1.html

:mrgreen:

Thanks Ernie 8)