I worked out an engine RPM Worksheet

[1hot5.0]

Since there always seems to be the question of "What RPM will I be at with _____ gears at ________ mph in O/D?", I decided to make a document with approximate answers. I hope that this could be of use to some people.

Engine RPM with various gears

 

[85stangt]

thats pretty cool but im not genious enough to figure what my top speed is in Drive not OD, but wait a minute you also have an auto and stated that you are installing 4.10 gears so are you going to be able to run the quarter with out hitting OD?