Limited slip v. conventional
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Go do a small burn out and find out.
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According to the Dodge website, autos also have the LSD.
Conventional means open diff.
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383 Posts
If that is so, that is new for 2011.
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Yeah, if you build a 2011 R/T on Dodge.com and select the Auto, then go to the Summary, it says Anti-Slip Diff in the Included Features section.
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383 Posts
It also said 6-speed. THe autos have a 3.06 rear, which is an open differential. Looked at several auto R/T's window stickers, and all come w/3.06. I had initial confusion about this too (wrong window sticker on my car). The way to be sure is to go to the For Owners section on dodge.com and request your build sheet. they turn that around in 24 hrs.
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183 Posts
Wow, they need to fix the website.
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There have been a lot of threads on this...the website AND window stickers are confusing. THe 3.06 will lay down two tire marks, but is is an open diff.
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46 Posts
Appreciate the discussion - have the build sheet. Says "conventional differential" - DS8P and 3.06 ratio DMPP.
Not sure why a car with Trak Pak and Perf Brake Pkgs would have an open rear with such high gears. Car seems to drive nice. Have not had it loose yet ( 50 miles on the car) so don't know if both tires will spin.
Not sure why a car with Trak Pak and Perf Brake Pkgs would have an open rear with such high gears. Car seems to drive nice. Have not had it loose yet ( 50 miles on the car) so don't know if both tires will spin.
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18,762 Posts
Unless its an SRT automatic 2009-present >> then you have the Sure-Grip (anti-spin differential). SRT auto still gets the 3.06 axle ratio.
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1,992 Posts
All automatics RT or SRT have 3.06 ratio axle. Only the Manuals get the 3.92. Trust me when I say the tranmission easily makes up for the higher ratio.
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I also only think RT Plus or RT Classic get an anti spin differential and the regular RT (which you have) it is not an option.
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Was stated in another thread that the limited slip differentials had a "finned" housing ans the open differentials did not. The pic below is from my car, 2011 with STP and auto.
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Another thought regarding the need for limited slip, and again this is my own opinion....
with a live axel, when torque is applied the body of the car rotates clockwise (as viewed from behind) and the live axel rotates the opposite direction. This tends to load the drivers rear tire with additional down force and unload the passenger tire. This leads to the 1 wheel wonder burnouts.
Our Challengers use a multi link rear suspension. When torque is applied, the body and differential will still tend to rotate clockwise but this does not effect the ballance of weight on the tires. They both maintain an equal amount of weight (or pretty close) so there really is no reason for 1 tire to spin vs the other tire. Really no need for the posi rear end if what I stated is true.
Another thought regarding the need for limited slip, and again this is my own opinion....
with a live axel, when torque is applied the body of the car rotates clockwise (as viewed from behind) and the live axel rotates the opposite direction. This tends to load the drivers rear tire with additional down force and unload the passenger tire. This leads to the 1 wheel wonder burnouts.
Our Challengers use a multi link rear suspension. When torque is applied, the body and differential will still tend to rotate clockwise but this does not effect the ballance of weight on the tires. They both maintain an equal amount of weight (or pretty close) so there really is no reason for 1 tire to spin vs the other tire. Really no need for the posi rear end if what I stated is true.
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383 Posts
Good point Hal.
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Never thought about it like that, but that does make sense in theroy.Was stated in another thread that the limited slip differentials had a "finned" housing ans the open differentials did not. The pic below is from my car, 2011 with STP and auto.
![]()
Another thought regarding the need for limited slip, and again this is my own opinion....
with a live axel, when torque is applied the body of the car rotates clockwise (as viewed from behind) and the live axel rotates the opposite direction. This tends to load the drivers rear tire with additional down force and unload the passenger tire. This leads to the 1 wheel wonder burnouts.
Our Challengers use a multi link rear suspension. When torque is applied, the body and differential will still tend to rotate clockwise but this does not effect the ballance of weight on the tires. They both maintain an equal amount of weight (or pretty close) so there really is no reason for 1 tire to spin vs the other tire. Really no need for the posi rear end if what I stated is true.
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Seems none of the V-6 models or the regular RT (with HEMI) off the anti spin differential as an option. You need the RT Plus or higher.
All v8 automatics regardless of anti spin or not are 3.06 ratio axle while the v8 6 speeds are 3.92 axle ratio
All v8 automatics regardless of anti spin or not are 3.06 ratio axle while the v8 6 speeds are 3.92 axle ratio
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Well, I'll be: that's a MB part # on that case.
A W203 C-class version (MY 2000 - 2007) at that...for reference sake, that's the "Mettingen" open 215mm differential. The 2008 SRT8's also used this same open diff as well.
A W203 C-class version (MY 2000 - 2007) at that...for reference sake, that's the "Mettingen" open 215mm differential. The 2008 SRT8's also used this same open diff as well.
Was stated in another thread that the limited slip differentials had a "finned" housing ans the open differentials did not. The pic below is from my car, 2011 with STP and auto.
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