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Old 11-19-2020, 02:30 PM   #61
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Originally Posted by switz View Post
Cummins speciality is straight six cylinder diesels.... not much luck with small v8 diesels.
..never seen a V8 cummins in the trucks 555..265...903... didnt do much
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Old 11-20-2020, 06:39 AM   #62
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..never seen a V8 cummins in the trucks 555..265...903... didnt do much


Nissan XD has (had) a Cummins V-8.
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Old 11-20-2020, 03:25 PM   #63
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While this was quite true in the past, it's no longer valid for every make.

With the 2020 redesign, GM specifies a higher GVWR for Duramax versions to compensate for the larger mass of that engine, which negates the payload penalty for choosing the oil burner.
Thanks. Thatís good to know and makes sense. I wonder if the increase in GVWR makes it essentially a 1 ton truck😀
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Old 11-20-2020, 03:30 PM   #64
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Originally Posted by JTChapmon View Post
We did a lot of research on the AS we want to buy and then started looking for the truck. Based on pay loads and tow weight, none of the new ASs really require the benefits of a diesel drive train. Especially when you calculate the cost of diesel and additional maintenance and then DEF. Further calculate the cost of fuel vs the fuel savings of diesel, it could take six decades to pay back the diesel. Some will say resale is a big advantage of diesel but I really don't care what my kids get for my truck when I am done with it one way or the other.
With all that, we went gas, 2500 Dodge Ram Longhorn with a 4:10 differential.
I am knowledgeable on the benefits as I manage the maintenance of a military ship with seven diesel engines...but then I preferred steam propulsion from my Navy days.
You are correct in that a diesel isnít required for an AS; nor can one cost justify it. However, itís is nice to have when pulling a load in the mountains or accelerating up an uphill entrance ramp with a 28í trailer in tow😀. It just a matter of preference. Just like an International over a Flying Cloud.
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Old 11-20-2020, 04:20 PM   #65
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Thanks. Thatís good to know and makes sense. I wonder if the increase in GVWR makes it essentially a 1 ton truck😀

Even more so.

A fully-loaded GMC Sierra 2500HD Denali Duramax has a payload rating of more than 3000 lbs. My 3500HD AT4 payload rating is 3839lbs, and I have every option except gooseneck prep.

Had I paid attention to payload ratings, I would have ordered a 2500HD instead.
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Old 11-21-2020, 11:04 AM   #66
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Notice that Nissan stopped building their pickup trucks with the Cummins V8 as there were too many issues. They planed to call it a heavy half ton but the actual numbers were even less than some other brands Ĺ ton units.
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Old 11-21-2020, 03:56 PM   #67
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It's not just the hauling...

Quote:
Originally Posted by JTChapmon View Post
Based on pay loads and tow weight, none of the new ASs really require the benefits of a diesel drive train.
You are right if payload and hauling is what is of interest to you. Wally Byam promoted the Airstream on the basis that it could be pulled by a car, or even a bike! (see promotional photo). And as long as you stay on level roads, pretty well anything can tow an Airstream.

But in real life you may end up with grades like the ones shown below, which is from a road in the beautiful Charlevoix region of Quebec (recognized as a UNESCO biosphere reserve where the Laurentian mountains meet the St-Lawrence River).

The inherent engine braking nature of the diesel engines that one finds in 3/4 ton trucks make driving in these conditions a lot more pleasant and safe -- they are an antidote to white knuckle driving.
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Old 11-22-2020, 11:12 AM   #68
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Going up the road captioned above would be easier with a turbo charged diesel as no engine power is decreased with elevation increases.
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Old 11-22-2020, 11:25 AM   #69
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Older tow vehicles

While it is accurate that Wally Byam was an advocate for using a passenger car as a tow vehicle, remember that the passenger cars in the 50's & 60's were of body on frame construction, just like today's trucks. Unit body or unibody vehicles today are vastly different from the old cars. You will also see many photos of Wally's caravans showing International Travelall trucks, the forerunner of Suburbans and SUV's. My first tow vehicle was a 1993 Travelall with an AMC 390 cu. in V-8, a Chrysler Torqueflyte transmission, and a mixture of other parts from different sources. Finding correct replacement parts was always a challenge. My Travelall was a better TV for my 23 ft. Prowler than a '88 Chevy Suburban with the 350 GM V-8 I had later.
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Old 11-22-2020, 12:32 PM   #70
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You will also see many photos of Wally's caravans showing International Travelall trucks, the forerunner of Suburbans and SUV's. My first tow vehicle was a 1993 Travelall with an AMC 390 cu. in V-8, a Chrysler Torqueflyte transmission, and a mixture of other parts from different sources.
Memories... my dad worked for International and our family "car" was a Travelall, way more practical than the station wagons of the day! (but we didn't have the Airstream). Lee Iaccoca didn't need to look too far for inspiration for the family van.
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Old 11-22-2020, 08:32 PM   #71
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I have a 2018 Dodge Ram 3500 with a high-output engine diesel with the ASN transmission and I've heard a lot of reports about problems with them shifts hard from 1st to 2nd especially when pulling the dealer doesn't seem to know what to do with it or how to fix it but otherwise I love the truck I wouldn't by any other truck
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Old 11-23-2020, 08:12 AM   #72
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^^^ Too much truck for mere mortals, thatís the real problem.
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Old 11-25-2020, 09:42 PM   #73
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Love my 2015 Ram 3500 with Cummins and 6 speed manual transmission.


BUT...


It *did* leave me on the side of I-81 for several days while towing last Spring when the DEF pump failed. It was still covered under warranty, but I couldn't get any dealer in the Harrisburg, PA area to service the truck within a two week period. Ended up towing it on a friend's flatbed 300 miles home to get it fixed. The whole DEF system is a huge Achilles Heel for *all* diesels today. My 2015 does not run as well as my 2001 Dodge/Cummins did, IMHO; and the arbitrary 150 mile disablement built into the software is criminally negligent - and guaranteed to leave you stranded in Timbuktu.


Not much I can legally do to fix this issue; but if I were to go out and buy a new Ram tomorrow, sadly, I would go with the Hemi gasser... :-(
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Old 11-26-2020, 09:14 AM   #74
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Nissan XD has (had) a Cummins V-8.
Spell check..I meant the Cummins V8 engines..in the trucks...didnít do much
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Old 11-26-2020, 09:26 AM   #75
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Originally Posted by Hermes View Post
You are right if payload and hauling is what is of interest to you. Wally Byam promoted the Airstream on the basis that it could be pulled by a car, or even a bike! (see promotional photo). And as long as you stay on level roads, pretty well anything can tow an Airstream.

But in real life you may end up with grades like the ones shown below, which is from a road in the beautiful Charlevoix region of Quebec (recognized as a UNESCO biosphere reserve where the Laurentian mountains meet the St-Lawrence River).

The inherent engine braking nature of the diesel engines that one finds in 3/4 ton trucks make driving in these conditions a lot more pleasant and safe -- they are an antidote to white knuckle driving.
This is the salient point to this debate and very well stated.

After making the move up from a 1/2 ton to 3/4 ton RAM turbo-Diesel, I assure you in the context raised by HermŤs, the confidence instilled by having your trailer hitched to the more stable platform far surpasses the few extra MPG you may gain with a smaller TV.
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