Gears vs. RPM?

['88Cobra]

I know there are lots of threads on the "3.73 vs. 4.10" issue, but what I want to know is if anyone can tell me what speed and at what RPM they are at on the highway with either? Keep in mind I have an AOD. I want to install 4.10's, but not if I'm not going to be able to drive it on the highway without revving the s##t out of it. I still can't decide which gears to go with, but want to install them asap. Any help on this subject would be greatly appreciated.

 

[88_GT_5_oh]

100 KM/h with 3.73's my aftermarket tach reads 2000 rpm. the 4.10's arn't gonna be much higher, maybe 2200

since yours is AOD i say get the 4.10's

 

[jrichker]

Values calacuated on stock diameter tires.

Cruse on the highway at 65 MPH in 5th gear
Engine RPM: 2162.
Vehicle Speed: 65
Rear End Gear: 3.73

1st gear
Engine RPM: 5200
Vehicle Speed: 32.
Rear End Gear: 3.73

2nd gear
Engine RPM: 5200
Vehicle Speed: 53.
Rear End Gear: 3.73

3rd gear
Engine RPM: 5200
Vehicle Speed: 79
Rear End Gear: 3.73

4th gear
Engine RPM: 5200
Vehicle Speed: 106.
Rear End Gear: 3.73

 

[macx]

This will let you calculate all of it, even has the AOD ratios built into it.

http://www.smokemup.com/auto_math/index.php

Just FYI, here's some info to help your AOD live

http://www.lincolnsonline.com/article111.html

 

['88Cobra]

Thanks for the help