[67SSChevelle]

What tire heights are you running? I'm trying to see what I can get away with. Since I'm building a turbo motor and have a great TH400 I need to change the gears in my 12 bolt. I don't know how tall of a rear tire I can fit. at 65mph wit a 28" tire and 3.08 gears I will be at 2450 rpms. A 30" tire takes me to 2300. If they made a 2.73 gear I would get them and then there would be no problem.

Thanks