Hello all,

Trying to find some info I can't seem to locate at the moment, have tried searching etc but no luck.

Basically trying to use this website: http://www.osella.com.au/gear-ratios.htm
to calculate what tyre size I can change too and how that will effect my RPM (In a race car).

I have found the following for a 3.5l v6 5spd Manual:

1st 3.583
2nd 2.105
3rd 1.407
4th 1.031
5th 0.761
Reverse 3.416
Final Drive 3.722

But to input into that software I need to know the diff ratio? And I also want to calculate it so its calculated in 2nd gear, and then in 3rd gear (to work out best tyre sizing for track).

If anyone can help that would be greatly appreciated!

Cheers

Aren't final drive and diff ratios the same thing on front wheel drives?

Aren't final drive and diff ratios the same thing on front wheel drives?

Affirmative.

Cheers guys!