Quote Originally Posted by randyr View Post
Do you mean that with the 3.0 rear gears or the 3.50 rear gears?

Here are some calculations based on my 5th gear at .68:

R&P ratio 70mph 5th gear .68 RPMs
3.0 1714
3.50 1999
3.89 2222
4.11 2348

Since you said I'd have 2 overdrives, here are the numbers for 4th gear:

R&Pratio 70mph 4th gear 1.0 RPMs
3.0 2520
3.50 2940
3.89 3268
4.11 3452



I may end up with a 29" tire which would change these numbers a little but not too much.

This chart didn't post the way I intended but I think you guys can figure it out. It's all figured at 70mph with the different rear gear ratios with a 28" tire. The same is applied to both 4th & 5th gear.
looks like some good cruizin' rpm to me!!!! Had 4.56's in my '83 for awhile, with a 3 pedal 5 speed car it works just fine!!!! Heck, used to play on the street with the Mighty Mav with 6.50's on a spool with a Windsor and my trusty old Nash 5 speed!!!!! Absolutely the most fun you can have with yer clothes on!!!!!