Quote Originally Posted by David88vert View Post
In 4th, you have a 1:1 transmission ratio. If you have 5th, that is OD gearing. OD is either 0.864 or 0.773. We will assume it is 0.773 to give you the benefit of the doubt. I'm giving you the benefit of the doubt thinking that you have the 1980 transmission and rear end, rather than the 79, which is worse.
Stock tire size was 195/70 VR14.
If we calculate based upon that, we find that you would be running 113.7 mph at 5K rpm - and that is if you have zero wind resistance, and no coefficient of drag. You would have to do 5700 rpm to reach 130mph utilizing your OD. Your 4th gear couldn't reach 130mph at even 7K rpm.
All of this is pointless... Considering I have another gear.

Quote Originally Posted by David88vert View Post
Do you have any idea how long it would take you to reach 130mph in OD?
Not that long at all? Considering I have done it, I would say from 80mph it took me maybe 1/3 to 1/2 of a mile.


And the car is an 81 2+2, besides an 82-83 turbo that came with the B&W T5 my car has the best drive train for any L powered car.