If you've not seen it yet, you'd better check it out:
http://marlincrawler.com/tech/transmission/transmission-gear-ratio-chartI plan to get a couple more transmissions listed, such as Landcruiser transmissions. The list is mainly only for those transmissions that we actually rebuild in-house.
I will be working on a new updated gear ratio calculator in the near future. Watch this New Announcements and Info forum for it's release soon.
Thanks
Mike
