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I know this has been discussed on this forum along with TDR and Dieseltruckresourse.com but just wanted to give a little update as to my journy with the bad vibrations these trucks sometimes have.
So after driving myself nuts trying to diagnose the droning (woo woo woo) vibration coming from the rear of the truck at high speeds; I went and dropped the cash for a Mopar one piece aluminum driveshaft to replace the two piece.
-NO launch shudder....very smooth acceleration.
-WAY lighter than the stock steel shaft, made installation much easier with one person (me).
-Feels tighter when going over bumps...before it felt like the driveshaft or something would hit the frame or bottom out if a large enough bump was hit. Now it feels like the engine/tranny is more stable without all the weight of the two piece jostling it around.
-No high speed vibrations yet. I have had it up to 70 mph or so on the flats. The true test will come when I drive over the continental divide this weekend because for some reason the droning is way worse when going up hills and really throttling into the truck.
I'm keeping my fingers crossed for when I drive the mountains on Sunday!!
Price for mine was listed at $607!! I don't know about the manual's price. I was able to get them to knock it down to $549 for being a return customer but its still ridiculous when guys were getting them about a year ago for around $350. I tried to get a few local shops to build one but they said because it was an AAM driveshaft that they couldn't get the knuckles in aluminum like they could have if it were a Spicer.
I want to do this when my carrier barring finally goes, do you think there will be any problem with shoving the seal into the transfer case by really squatting the rearend?
I'm not sure but with the lift on my truck, it looked like there could be a little more engagement on the slip yoke. I was worried that there would no be enough overlap with the splines and allow it to vibrate. A local 4wd shop told me a guy with an 08 with a single driveshaft almost had it pull totally out of the t-case, but that was with an 8" lift so he definitely needed it to be lengthened.
I would guess that on a stock truck that they would have to allow for enough forward movement of the shaft until the springs hit the bump stops?
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