what do you mean about downshift

 

410s gas mileage 456 wear and tear on motor not needed 488 blown motor

 

You don't know what you are talking about!!

65 x 4.88 x 336 / 33 x .79 = 2551RPMs isn't going to blow an engine!!

65 x 4.88 x 336 / 35 x .79 = 2405 is good for that size.

65 x 4.56 x 336 / 33 x .79 = 2384 RPMs good for that size tire.

65 x 4.56 x 336 / 35 x .79 = 2247PMs Great for the 35s

 

dont now were that chart comes from but the two i use show over 3000 rpm with 456 and 33

 

http://www.jeep4x4center.com/jeep-tires/tire-gear-ratio-chart.htmgo here and go down to jeep calculators 488 at 65 3300 rpm

 

I dont think 3300 RPMS would blow a motor either but I'd certainly want it lower.

 

thats to high for me and highway waaaaaaaaaaaaa all the time its going to take its tool evenyually u no

 

The chart is correct if you do not have an overdrive transmission. It says right above the chart a manual transmission with a final drive gear of 1:1. The AW4 is either .79:1 or .75:1

 

3300rpm is hardly WAAAAAA lol. But yeah obviously a higher(relative) RPM such as this in the 4L for extended periods will eventually take its toll but I still think it would have to be higher(4000 range) or something else be wrong(such as poor maintenance) before anything goes wrong.

A properly running 4L will be fine at 3300RPM for extended(hour or two) periods of time.

 

it aint good for it

 

Who drives 65 on the freeway? Shouldn't you figure for 75 or 80?

 

ha have fun driving a lifted jeep on huge tires that fast

 

i do 80 gets a little scary i figure if im going im going good lol

 

Good point. I used to have a 97 Wrangler 4.0 and that things topped off at about 75 just from the drag from the wind.

 

that chart doesnt use the correct final drive ratio....it uses a 1.1, which is like 4th gear on a 5speed. its not correct for an ax-15 or aw4 equipt jeep

it needs to use .79 or .85 for the ax15


this chart helps if you run a ax15
http://www.manoian.net/jeep/gear_ratio_calculator.html