figuring speed and RPM's

[73BB440]

right now i have 2:76 gears in my 73 chally. I want to figure out what speed i'd be going at 3,000 RPM with x gears. Basically i'd like to be able to occasionally cruise on the highway and not be much above 3k RPM. I have the 727 trans with 275/60/15 wheels, how would i go about putting in different rear end ratios to figure approx 3,000RPM at 65 mph.

[OUTLAW]

go here on my forum as I have about every concievable calculator and here is a rpm x gear ratio calc


http://sybertek.us/moparsa2e/viewforum.php?f=53

[MEK-Dangerfield]

What I have... 255's on the back(60 series, 15 inch), 3:23 gears, and at 65MPH, I'm probably in the 2800 RPM range. If you want 3 grand, maybe 3:55's would be your ticket?  :thumbs:

  Mike

[OUTLAW]

here is my combination

4:30 gears - 26 inch tires- @60mph rpm = 3334

with 28 inch tires @60 it is =3096

[73BB440]

my calculations 3.73 would put me a hair over 3000. So i think i'll go with the 3.73 which is what i wanted in the first place. Thanks for the help

[Chryco Psycho]

http://www.cuda-challenger.com/smf/index.php?topic=5097.0