ok i have 3.73 gears but i have 255 60R 15 inch tires so my tires are like 29. something inches tall. that must hurt my gear ratio, and make it like 3.2 or somehting ???

 

considering your average N50-15 was 28.5 max. And that was about a 275 or 285 size at least

They are probably somewhere about 26.5.
And since the average height was proably about 25, I would at that your about 5percent higher than a 3.73. Ballpark 3.55-3.6


edit
according to
http://www.f-body.org/gears/
a 255/60-15 is 27inchs tall.

 

i used the tire formula and found out my tire is only 27 inches tall 255*0.60*2/25.4 + 15 =27.0

opps sorry only 27 inches tall

 

it also says a 255-50/16 is 27 inches tall and i have never seen one taller than about 26.2