Does anyone know what the RPMs should be for a bone stock wrangler with 6 cyl and 5 speed at 70 MPH ???? Approx?
) Yeah, that...tire diameter x (times) PI (3.1416) = tire circumference in inches
5280 ft per mile x 12 in per ft /(divided by) tire circumference = axle rotation per mile
axle rotation per mile x rear end ratio = drive shaft rotation per mile
drive shaft rotation per mile / transmission ratio = engine rotations per mile
miles per hour / 60 = miles per minute.
miles per minute x engine rotations per mile = engine revolutions per minute
You can get the transmission gearing for each gear for the AX15 transmission and figure the rpm for any gear at any speed.