[jhein]

Originally Posted by Formulajones

That's a lot of money to spend for a small gain. If you guys are really driving that slow (55 mph) why are you even looking at overdrives? For as little as you drive these cars and cruising at the old speed limits I wouldn't even be thinking about an overdrive.

Well, for a 55 mph limit I will go up to 65 (my local LEOs ignore that here and in most places I think). That's around 2700 rpm in 4th gear vs 2150 in 5th. That's a pretty big difference. Plus you also get the 2.87 1st gear, that turns my 3.31 rear into the equivalent of a 3.77 when compared to a Muncie with it's 2.52 1st gear. It works for me. Your driving habits are different and if I used my car like that I'd most likely get the .68 too.