Ok, Im tired of the stupid 85mph speedo!! I have no idea of what my car can do on the highway because it is burried at the end of a 1/4 mile. Any thoughts? Its a 85 LB9/700r4/3.27. I know on the highway it goes like crazy in 3rd, then shifts to 4th. Things are moving pretty fast around me so I figure Im going at least 110. Can I figure it out with engine speed? What do you guys with the 140mph speedo top out at?
thanks

 

What rpm are you at when your going the thought to be 110mph?

That will tell you alot, since we know you have 3.27's the formula should be easy to figure out.

Brendan

 

Im thinking somewhere in the 3500-4000 rpm range (I was kind of looking at the road ) but I didnt hold it there very long. If it helps my tires are 245/50/16.
thanks

 

I figured it out with the equations on this page...sorry about the post, I didnt realize they were there. Comes out to about 117, so my eye speedo wasnt too far off. Let you know when I really see what it can do.
thanks