see my first post the second one in this thread.
Originally Posted by 96GTS
you are correct except the drag pack part. 3.91 and 3.73 are 6 speed rears. drag packs have solid axle rears.
Thanks again for your answer!
I found this in other thread here in the forum:
Here are the actual NAG1 ratios:
with the stock gears I am crossing at 5000rpm in 3rd... with my siftpoints raised with Diablo Trinity...
Hi all, Here are the True NAG 1 Tranny gear ratios and Final Drive Numbers. And yes, the 3.73 gears are TOO LOW for the auto stick cars. They make 1st gear like a Granny gear and wind up too high on the highway. 3.55's are a better choice if you want to maintain decent all around drive-ability, and 3.23's if all you want is to make up for a taller rear tire.
Originally Posted by luis_gts
Now... U. S. Gear is now offering 3.23 and 3.55 R&P sets for the 226mm Getrags at almost $100. cheaper than Richmond and they're supposed to be as good or better quality than Richmond. They are also MADE IN AMERICA!!! I am having Unitrax install a set of 3.55's in my 09 SRT Chally the end of this week.
Well... the 6 speed cars with 18" wheels get 3.73 and with 20" they get 3.92.
Here's the "final drive" (trans gear X axle ratio) for the 6 speed w/3.73 (first column is transmission ratio second is the final drive ratio):
Here's the "final drive" (trans gear X axle ratio) for the 6 speed w/3.92:
Here's the "final drive" (trans gear X axle ratio) for the auto w/3.06:
Last edited by broadfca; 03-25-2012 at 09:20 AM.
Can you give me more info about that U.S. gear en ratio? does it fit the 09+ SRTs?
Originally Posted by broadfca
Yes, U.S. Gear has recently released 3.23 and 3.55 ring and pinion sets for the Getrag 226mm differentials. That means they will fit the 09 and up Chrysler Corp. cars. So far I haven't seen anything on U.S. Gear's Website to verify these gears exist, but Devin at Unitrax (or any other installer) can get these gear sets. I'm sure there is a way to order the gears if you wanted to install then yourself, but I personally haven't seen where to do this yet. One might call U S Gear and ask where to buy them.
Last edited by broadfca; 03-23-2012 at 08:01 AM.