Looking for gear chart

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glass3222

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I have 3.92 so I'd actually be running more efficient by putting on 35's instead of the 33's that I have now? Obviously a little loss of power comes with that tho.


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I am here: http://maps.google.com/maps?ll=41.908402,-87.857931

No you will not be more efficient. One thing to remember with that chart is that the RPMs are with a trans gear ratio of 1:1(no overdrive) at 60 MPH. Your Ram has a 0.67:1 second overdrive, so the RPM in the chart will be much lower than that. You will be more efficient with a 31" tire and 3.92 or 33/35" tire with 4.56 IMO
 
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Ramunit

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You must multiply those RPM numbers by .67 to get the accurate RPM if you are in 5th gear.

OR..... If you want to do the formula yourself it's:
mph x gear ratio x 336
_____________________
Tire diameter
x
trans gear ratio

70(mph) X 4.56 x 336 = 107251.2
107251.2 / 33(tire dia) = 3250.03
3250.03 x .67(5th trans ratio) = 2177.52

2177.52 RPMs at 70 mph in 5th
 
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Mad Cow

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Blah I need 4.88 gears here soon. That will be expensive.
 

glass3222

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Blah I need 4.88 gears here soon. That will be expensive.

I would not count on 4.88, you cannot even get them for 02-10 front diffs let alone 11+ But it doesn't hurt to have hope:********:
 

glass3222

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Really what gears are available for the 11's?

2011+ changed to ZF axles (1500s). For the rear 3.21, 3.55, 3.92, 4.10 Front, 3.55, 3.92 All only from Dodge.

Last I hear was the aftermarket gear companies are waiting a few years to to even start R&D, they are waiting to see if dodge continues to use the ZF axles for a long enough period of time to make aftermarket gear sets cost benefitial to them
 
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RompinRam

RompinRam

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Sorry I just changed that.. It was from my tapatalk. For some reason it was posting my location of where I was when I posted. It should not be doing it anymore! Got a little annoying to look at all the time.
 
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