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  #11  
Old 03-02-2013, 08:12 PM
Ford Apostate Ford Apostate is offline
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Originally Posted by domesticman View Post
I figured I didn't need posi seeing as how I had my 4x4 package
Having 4x4 doesn't diminish the value of the anti-spin differential. It's an additive feature that goes hand in hand with 4x4. I would research more opinions on that while you can still change your order. I would think that would be a very popular feature up in Canada for you and your resale value. It doesn't add a lot of cost if you order it with it but retrofitting it is a different story.
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Old 03-02-2013, 10:19 PM
domesticman domesticman is offline
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Originally Posted by Raybird View Post
You were able to order a SPORT, Hemi and air suspension? My dealer cannot order that package yet.
Ya definitely man. I paid for so many upgrades that it didn't fit on the bill of sale. I'm surprised you can't get the same package though. Weird.
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  #13  
Old 03-02-2013, 10:23 PM
domesticman domesticman is offline
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Quote:
Originally Posted by Ford Apostate View Post
Having 4x4 doesn't diminish the value of the anti-spin differential. It's an additive feature that goes hand in hand with 4x4. I would research more opinions on that while you can still change your order. I would think that would be a very popular feature up in Canada for you and your resale value. It doesn't add a lot of cost if you order it with it but retrofitting it is a different story.
Hmm. I'll have to take a look into that. My knowledge on posi systems isn't advanced so I assumed that the 4x4 did its part not needed posi. Would adding posi as an upgrade effect any gas mileage or act as a pro/con in comparison to how my truck currently stands?
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  #14  
Old 03-02-2013, 10:24 PM
kxlexus kxlexus is offline
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Agreed. I have been buying 4X4 trucks since 1980 and everyone of them has had a form of anti-spin differential. It is one of those options that cost little new but a lot to add later. Proper gearing even more so. I ordered the 3.92 gears even though I am getting the 8speed transmission. I would have went with 4.10 gears if they were offered.
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  #15  
Old 03-02-2013, 10:44 PM
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plumcrazy73 plumcrazy73 is offline
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if you can change it get the 3.92's and the anti spin, worth it and cheaper now then down the road
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  #16  
Old 03-02-2013, 11:35 PM
BigHornCAP BigHornCAP is offline
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Here my take on limited slip rearends, having driven both non and locking rearends up here in canada.

with a non-locking (non limited slip, non posi, choose your name) rearend in slippery conditions moving in a straight line, One rear tire will spin, most likely kicking the rearend to the passenger side, then eventually getting started.

in a locking, (limited slip or posi) rearend in the same situation, both rear tires will spin, more than likely staying in a staight line, and gettting you off the line safely.

even with 4x4, the rearend will still slip to the side with a non-locking rearend, although it usually isn't as extreme.

there are other situations such as off-roading, where having power available to 4 tires is needed. 4X4 without limited slip rearend is a bit of a misnomer, since in full spin only 3 tires will be spinning full speed.

personally i don't see the point to non-locking rearends, but i assume there might be some fuel savings in straight lines in non-slippery conditions.

i quantify this with that i am no mechanic(weekend warrior), this is just based on my driving experiance
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  #17  
Old 03-03-2013, 02:36 PM
s1000rrhp s1000rrhp is offline
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Get the limited slip and 3.92 would never be without
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  #18  
Old 03-03-2013, 08:56 PM
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Quote:
Originally Posted by s1000rrhp View Post
Get the limited slip and 3.92 would never be without
Ya but I heard that the bigger axle ratio you go, aside for heavier towing capacity, kills the gas mileage. I don't really tow as it is anyway and can't see me towing over 7-8,000 pounds anytime soon.

I believe my axle ratio is the 3.21 along with my 8-speed air ride V8.

Other than towing, why go a bigger axle ratio and how beneficial down the road would the posi upgrade really do for me seeing as how I have the 4x4 ready options.
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  #19  
Old 03-03-2013, 09:04 PM
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correct the 3.92 gears will get get less MPG

the 1500s come stock with 3.55

I know guys with 2011 rams that have 3.21 gears in them and MPG are fantastic
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  #20  
Old 03-03-2013, 09:09 PM
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I think the 3.92 has a negligible impact on mpg, especially with the 8 speed. It is also quicker off the line and then the obvious choice for towing.
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