sitting on the fence about whether to do this or not who has done it with the g56 how much did you spend what size tires are you runnin and an overall summary please.

 

anyone? bump for friday

 

Nope, but really thinking about it.

 

I have thought about it as well...that and a set of 285's would probably drop my rpms a bunch. Now if I could just find a reputable shop to do the work.

 

since when did they start making 3.42's for the 11.5" axle?????

 

Since this year, I believe. It is an option on the 08 2500s on the Dodge web site.

 

A set of 20 inch wheels will take a 3: 73 auto to approx 3:55 ratio,1800 rpm at 70 mph ,i get 20- 21 mpg u.s. at this speed ,hand calc. ,a cheap alternative,gear change for a 4x4 costs 3000 $$$ plus.

 

20" rims with what size tires? Wheel diameter in of itself won't change anything.

 

There was a lengthy thread by a guy who did the 3:42 swap in his truck a few weeks back: https://www.dieseltruckresource.com/...AAM+gear+ratio
Aftermarket 3:42 gears for 11.5 AAM: www.ringpinion.biz www.justdifferentials.com

 

$3000.00??!! what was he smoking I got a quote from a great differential shop locally for 1500.00 everything included with aam gears

 

what the heck is alboy talking about
anyways the only other drawback I see is recalibrating the speedo.

as far as if it is too tall I guess what would it hurt to run around in 5th instead of 6th?

And if the gears are to far apart I could drop down a size in tire.

 

See my sig, stock rims w/265/17-634 r per mile ,285/17-635 ,305/55/20-623 rev per mile,only raises the truck one inch in height,the dealer could not recalibrate for the 305 s ,but my edge/ att could.

 

the tires changed the ratio not the rim and 305 is not the heighth it is only part of the heighth equation the 55 is the key #

 

Someone needs to learn how to read a tire size. 265, 285 305 dont mean squat by themselves, as thats the tire WIDTH from sidewall to sidewall. That combined with the ASPECT RATIO (45, 50, 60, 70, etc.) gives the tire diameter. A 305/50/17 means the tire is 50% of the 305 in height from rim/bead to outer edge.
Comprende?

 

SORRY!! Just trying to share a little info,my set up works close to the 3:42,not too expensive,looks great,i comprende lots of ways of getting there,ADIOS!!