Dorman 1-peice Rear Driveshaft - Dodge Cummins Diesel Forum
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post #1 of 7 (permalink) Old 04-18-2019, 12:30 PM Thread Starter
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Dorman 1-peice Rear Driveshaft

Can't post link because my accounts to green, anyways Google 946-158 dorman driveshaft and you'll find the link from stockwiseauto.com and you can reference check me on the stock part but I couldn't find one without the nylon inserts and if you ask me, original equipment or not, when it's designed to be taken to a shop to be done I don't wanna have much to do with it, I'm pretty capable and anything I don't know I'm willing to learn. Anyways that's my two cents on it. I also found a lot of other experiences where they went to even just press the cups out hydraulically and it bends the yokes, and when I was pricing around for repair of the 1-peice aluminum part that was on my truck the shop work was gonna be almost what the new shaft cost. Just another chrystler product designed to bring you in to the dealer...

08 Dodge Ram 3500 4x4 6.7 Cummins 68RFE Mega Cab SLT - DPF & EGR Delete H&S Mini Maxx w/ Trans Unlock running Performance tune - 295/70/R17 MT's on stock alloys 283,000

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post #2 of 7 (permalink) Old 04-18-2019, 12:33 PM Thread Starter
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Wow let me tell you.... If there's anybody out there in the frame of mind I've been for the last week, or anybody trying to upgrade their 2-peice driveshaft to a 1-peice aluminum one, don't shy away from the Dorman products! Please don't! I know the feeling of not trusting aftermarket parts that claim OEM quality, but man this driveline is so well made! For one, the factory Aam/Mopar product comes with those stupid plastic inserts which are why I ended up having to replace the driveshaft in the first place, while the new Dorman product comes with nice u joints with snap rings. Their not greaseable, but they are what's referred to as SERVICEABLE, while the factory u joints are clearly stated as being Non-Serviceable. Now, I'm a machinist, but these were my first u joints with the nylon insets and they kicked my . Long story short, I didn't do my due diligence before the project and beat on the u joints for about an hour and a half before realizing they needed to be heated to successfully remove the cups. This is where I said some choice words and realized, being a machinist, that I was ed. I had already stressed the fragile aluminum by beating on it, now I've gotta heat it up. Both yokes ended up toast on the driveshaft, and after researching and being in a certain financial distress, I chose the Dorman product for my truck from Stockwiseauto.com I'll embed a link at bottom. They were the cheapest, while claiming OEM quality, and they were the fastest claimed receipt date. I recieved the driveshaft yesterday and DAMN! It was beautiful! Aluminum welds look very good, nice penetration and they used AAM slip yoke and flange yoke! The test drive went well on the driveshaft end of things, though apparently sitting for a week killed my driver battery or my alternator, one of the two, or both, whatever happened now my alternator and driver battery are dead, with no charge coming from alternator whatsoever and the driver battery only holding 10v. Gotta love that goddamned luck sometimes . Anyways that's for another thread or another time, this post is to praise Dorman for the excellent product they manufactured for my truck and for MANY of our trucks, and while everyone may have different experiences, I'm hear to tell you guys if you've been thinking about it, have dealt with woes similar to mine, or just aren't sure where to go, Dorman offers a great product. The experience was really good for me, Stockwiseauto.com shipped it fast, ordered it last Sunday it got here yesterday, was very well packaged and exceeded my expectation. Also relieved my rear end vibration completely. I guess I'm posting this because there wasn't a lot of info on these dorman shafts for our trucks, and I'm hoping to help someone out of a bind. Also in my research I heard a lot of guys are looking to upgrade to 2-peice to a 1-peice and are going thru driveshaft shops that may be a little over the price range if what the old lady's have in mind I would rather bring my business to a place like that or more local but my pocket book and the current distress I was in caused me to pay one of the little big boys and they didn't let me down. Anyways I'm gonna cut this off, I'll post later to provide some pics, I'm at work right now, then afterwards I got a ton of to do as well as put a new alternator and battery on hope this helps someone.

08 Dodge Ram 3500 4x4 6.7 Cummins 68RFE Mega Cab SLT - DPF & EGR Delete H&S Mini Maxx w/ Trans Unlock running Performance tune - 295/70/R17 MT's on stock alloys 283,000
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post #3 of 7 (permalink) Old 04-18-2019, 03:26 PM
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I would be wary of putting a lot of power thru it, probably fine for stock power. Wall thickness = 0.083, diameter 4.5". For comparison, the Driveshaft Specialist shafts are 0.125 wall thickness & 5.0" diameter.

https://www.dormanproducts.com/p-911...aft&origin=YMM


I have one of these and it is 13# lighter than the one I pulled out (QCSB)
Dodge truck driveshafts page


and for reference if interested...
https://www.cumminsforum.com/forum/3...iveshafts.html
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post #4 of 7 (permalink) Old 04-18-2019, 03:39 PM Thread Starter
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Ya, the 4.5 inch they're referring to is at the yoke, it still necks out to about 5.75, the thickness difference is a 24 guage peice of metal, Very thin, about .0003 inches, I can live with it. The shaft itself doesn't handle the torque or power as much as the yokes and joints, and as I stated, they used AAM yokes and the joints looked as good or better, better in the sense that they didn't have the inserts! But hey I feel you and trust me I was weary, but in the moment I was in it was that or leave my truck down to about mid May to buy a nice one. Just wanted to post this because their was literally no info for our trucks and the dorman products and am hoping that somebody will see this and help them feel better than I was about it. Trust me I would WAY rather give my money to a local or mom-&-pop shop rather than a main aftermarket distributor who's known for outsourcing to China, which is where half my frustration was, granted it's only a day and I only got to drive it about 30 miles before the battery ed me over, but I wanted it to be known to our community that if your in a pinch as I was, driveline is shot, and are looking around, the Dorman product I purchased matched the old part exactly side by side (minus the broken yokes! ) and rode beautifully, I launched, and it handled it smoothly, granted I also try to drive like an old man, though I am running in Performance tune LMAO!

08 Dodge Ram 3500 4x4 6.7 Cummins 68RFE Mega Cab SLT - DPF & EGR Delete H&S Mini Maxx w/ Trans Unlock running Performance tune - 295/70/R17 MT's on stock alloys 283,000
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post #5 of 7 (permalink) Old 04-18-2019, 06:26 PM
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Switching to the one piece rear drive shaft always gets positive reviews....Original 2 piece design was beyond dumb.....similar to the front end/steering design and I personally volunteer to shoot the flaming rectum of a sub-human POS who designed the drivers seat.....

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post #6 of 7 (permalink) Old 04-18-2019, 06:58 PM Thread Starter
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I hear ya there... I already had the one piece in stock form but when I dove into replacing the u joints (joint after Trans was totally seized, couldn't move the yoke to heat properly as well as I had already been beating on the u joints) and ended up breaking that specific yoke after the rods were burned out... Then I may have gotten mad about needing a new driveline at that point and messed up the other side... Lesson learned and next time I'm gonna take a nice long toke so I'm more calm next time something that usually involves a press comes up lol. Definitely a better design than two peice any day.

08 Dodge Ram 3500 4x4 6.7 Cummins 68RFE Mega Cab SLT - DPF & EGR Delete H&S Mini Maxx w/ Trans Unlock running Performance tune - 295/70/R17 MT's on stock alloys 283,000
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post #7 of 7 (permalink) Old 04-18-2019, 07:04 PM Thread Starter
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As far as the steering goes.... Lol good story when I first bought the truck new to me, a buddy and I went on a road trip, he'd never drove a straight axle and he says "I don't know man, steering is a little choppy, I'd get your rack checked out..." so then another buddy, who's a diesel mechanic and has 2 straight axles, says, "dude for one, it's solid axle, two, it's a in dodge!" nuff said! But honestly I kinda like how it feels like a bit of an old international boom truck or something with the luxuries of a late 2000s rig lol at least that's what I tell myself to help sleep at night LMAO

08 Dodge Ram 3500 4x4 6.7 Cummins 68RFE Mega Cab SLT - DPF & EGR Delete H&S Mini Maxx w/ Trans Unlock running Performance tune - 295/70/R17 MT's on stock alloys 283,000
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