View Full Version : RPM calculations

05-31-2012, 07:29 AM
can you guys help me with rpm calculations on rearend ? i tried the f website again this morning and got this in all rpm fields "NaN" am i doing something wrong? told ja i'm a tech dummy. i'm wanting final drive M6/3:73 rpm combo's and M6/ 3:54 rpm combo's any other sites a sticky on this site? thanks in advance... the oldman........

05-31-2012, 01:35 PM
Did you input all the appropriate information?

05-31-2012, 01:36 PM
If you have an iphone there is a great app for this stuff.

Big Al
05-31-2012, 04:19 PM
If you have an iphone there is a great app for this stuff.

Select on the left side.

Al 95 Z28

05-31-2012, 07:15 PM
big al , i looked and the section of gear ratio's and it says install 5 out of 6 to get the answer you are looking for what do i install in the transfer case ratio? i told you guys i'm a tech dummy and i don't have an iphone sorry when it comes to the information super highway i'm still on a dirt road.. the oldman....

05-31-2012, 08:03 PM
This will get you in the ballpark.

05-31-2012, 08:39 PM
On the gear calculator when entering the gear ratios use a . instead of a :
It should work then. ex. 3.73

Old is just a point of view!

06-01-2012, 10:11 PM
thanks folks, guppytech, that was it on the f-body gear calc's use . instead of: thank you!!! very much!! the oldman....