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Old 11-04-2015, 06:25 PM   #29
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TORQUEFLITE 8 GEAR RATIOS

1st 4.71 : 1
2nd 3.14 : 1
D 2.10 : 1
4th 1.67 : 1
5th 1.29 : 1
6th 1.00 : 1
7th 0.84 : 1
8th 0.67 : 1
R 3.30 : 1

Here's the thing about the new 8-speed, the ratio's are setup in a way that a 3.21 will give you the torque of having a 4.10 gear off the line but with better MPG's at cruise.

I know it hurts your brains but believe it or not, with these new transmissions you can actually get the smaller gear set and still tow well.

Especially if you combine this with the 420-lb-ft ecodiesel Ram EcoDiesel - Fuel Economy, Power & Efficiency

Seriously, that's plenty of torque to move you.

You will be fine with 3.55
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Old 11-04-2015, 07:12 PM   #30
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I am old school here....I only have 3 gears and a 2.75 rear end.. Yes, 2.75....Running empty my 460 gets 14-16 mpg. Towing at 55 or under, it will do 12. Running 65+ and it drops to 9 something.
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Old 11-05-2015, 07:09 AM   #31
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Holy Smokes, your discussions on gear ratios etc are slightly beyond my pay grade but very glad to have folks in the Airstream community who are knowledgeable and conversant in these technical issues. I thank you. I think I call solve my problem by looking for a heavier, stronger truck.
As I go through the forum I see a lot of folks using the Ram 2500 diesel. I also see plenty on the road hauling all manner of trailers. And yet consumer reports and other magazines give the vehicle lousy reviews. I've got my eye on a '13 in Autotrader. The only questionable item which has nothing to do with reliability is its manual transmission. Since both my wife and I drive stick shifts not an issue, or so we think. Any comments? Again your insightful comments are most appreciated.
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Old 11-05-2015, 07:27 AM   #32
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[QUOTE=Jamesbford;1706458]I've got my eye on a '13 in Autotrader. The only questionable item which has nothing to do with reliability is its manual transmission.

I'd think hard about a manual transmission. You'll wish for an auto when stuck in traffic or caught in construction zones.

I have a friend who towed a long and heavy Avion, so he got a Ram 2500 diesel with a stick shift. He found it so exhausting that he sold it within the year and got one like it but with an auto xmission.
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Old 11-05-2015, 08:22 AM   #33
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after having a ford 7.3 with a 5 speed stick,I swore I'd never have another, my dodge with 6.7 and 6 speed auto is a dream, put it in drive and go, my wife even drove it with the trailer through Chicago and she is not a truck driver, she is a nurse with 96000 miles and never a problem.....
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Old 11-05-2015, 08:29 AM   #34
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With an automatic you don't have to worry about clutch replacement.
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Old 11-05-2015, 08:44 AM   #35
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Quote:
Originally Posted by Jamesbford View Post
Holy Smokes, your discussions on gear ratios etc are slightly beyond my pay grade but very glad to have folks in the Airstream community who are knowledgeable and conversant in these technical issues. I thank you. I think I call solve my problem by looking for a heavier, stronger truck.
As I go through the forum I see a lot of folks using the Ram 2500 diesel. I also see plenty on the road hauling all manner of trailers. And yet consumer reports and other magazines give the vehicle lousy reviews. I've got my eye on a '13 in Autotrader. The only questionable item which has nothing to do with reliability is its manual transmission. Since both my wife and I drive stick shifts not an issue, or so we think. Any comments? Again your insightful comments are most appreciated.
Buy that truck and never look back! Remember that the diesel has 850+ lb-ft of torque from ~1500 to 2400 rpm and the efficiency zone is around 1800 - 2100 rpm. What this means to you is that after about 50 mph you will be in 6th gear and can accelerate with the trailer to cruse speed. Anything less than a 5% grade is also 6th gear while towing. My truck handles almost any grade above 5% in 4th at 1:1 (52 mph @ 2000 rpm) and it is rare indeed to need 3rd while climbing. You can idle around parks in 1st or 2nd and this also works well in stop and go traffic. If you are lazy get the auto, but if you want complete control get the stick you won't regret it! (side note, I hope it has the 3.55 in it) My 2 cents...
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Old 11-05-2015, 09:23 AM   #36
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Dkottum, I don't know if your 2012 Ram has the Tow/Haul mode, or if it was modified for my 2015, but I find that it significantly reduces the tranny shifting in moderately hilly terrain. Although, it could also be that I have the 3.92 rear end.
The reduced tranny shifting most probably does have to do with your 3.92 rear end, we have 3.55 but that would not be my first choice.

Yes, we can get almost no downshifting by putting the transmission in 4th gear (of 6 total) but that effectively makes the trans a 4 speed, we lose the entire range of available gears.

In 4th gear we have a 1:1 transmission ratio. With an 8 speed we would choose 6th gear for a 1:1 ratio. So my thinking is the 3.92 axle allows the best use of the transmission when towing.

You can get a 3/4 ton diesel but there are no free lunches. Rougher ride for you and the Airstream, higher cost, higher entry/exit, higher center of gravity, longer turning radius, 2000 more lbs to move and stop. A perfect match for a 17,000 lb fifth wheel trailer, overdone for a mid-size Airstream.

My opinion based on our need for both an excellent 25' Airstream tow vehicle and a nice, maneuverable daily driver, certainly not shared by everyone. I'm in the Ram Ecodiesel camp, or for greater load carrying capacity Ford and Chev offers in the similar lighter pickups.
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Old 11-05-2015, 09:23 AM   #37
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With an automatic you don't have to worry about clutch replacement.

With a manual you don't have to worry about replacing your automatic transmission.
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Old 11-05-2015, 09:28 AM   #38
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[QUOTE=Bob662;1706463]
Quote:
Originally Posted by Jamesbford View Post
I've got my eye on a '13 in Autotrader. The only questionable item which has nothing to do with reliability is its manual transmission. .

Driven and maintained with reasonable care doubt you'll ever have an issue with the G56 manual.

Clutches are a wear item and drivers techniques can make the last a really long time or less than the length of a boat ramp.

I can offer details about the clutch in the truck but would suggest via PM or phone.

Gary
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Old 11-05-2015, 09:31 AM   #39
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With a manual you don't have to worry about replacing your automatic transmission.
Funny, I would choose a manual transmission any day over an automatic for better control. Our Ram 1500 was our first automatic in over fifty years of driving and we only got it because they no longer offer a driver's (manual) transmission. Just the sissy slush box.
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Old 11-05-2015, 09:49 AM   #40
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With a manual you don't have to worry about replacing your automatic transmission.
You shouldn't have to worry about replacing a good auto transmission, either.

As far as clutches go, my daily driver truck is 21 years old and has 194k miles. It still has it's original clutch.
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Old 11-05-2015, 10:03 AM   #41
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Driven and maintained with reasonable care doubt you'll ever have an issue with the G56 manual.

Clutches are a wear item and drivers techniques can make the last a really long time or less than the length of a boat ramp.

I can offer details about the clutch in the truck but would suggest via PM or phone.

Gary
The original clutch in my truck ran to 225k miles before the center section of the disk was blown out. It didn't leave me stranded, but I did have to match rpm to wheel speed to get home. Sure wish I had the 6 speed, a gear between 3rd and 4th would come in handy every now and then. Take Gary up on his offer.
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Old 11-05-2015, 10:11 AM   #42
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Tuco,

Didn't see your TV details but I bet the pilot bearing was kaput too. Long story.

I'm 35 years in the clutch industry.

I'm really ready for a campfire.

Not exactly related but my Daughter had a trans problem with her Hyundai, it had minor shifting issues. The ONLY solution was a dealership reman trans.

Gary
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