eightballsidepocket wrote: Mentioned by a few members here was the 68RFE Tranny being the weak point.
I've never heard this before.
I heard that it is as stout as the Allison or the Ford Auto Tranny.
The Dodge 68RFE tranny is maxed out on the regular output engine. When Dodge upped the torque to 800lbs, they put in a new converter and added an ATF to water cooler.
Also with the new max tow package that you can get with the HO engine, Dodge upgraded the AAM 4:10 rear axle with larger bearings and a stronger LSD.
The Dodge tranny weighs around 75lbs less than the Allison or Ford Tranny.
If you want the manual tranny, you get a derated engine, that is less than the 350HP/650lb non HO engine.
I have an 08 1 ton Dodge(75k miles), and have just put in the 3rd auto tranny. In each failure, 2nd and 3rd gear failed. To be fair, this truck is used on the ranch and 2nd and 3rd gear is used most of the time, hauling either a goose neck cattle trailer or flat bed in very steep roads.
Our Fords( 95, 350's with both gas and diesel engines) and our 95 Dodge 5.9 Cummins haven't had a problem.
Our 2011 Ford hasn't had a problems, but it is still new.
The Dodge cab/chassis trucks come with 305 hp and 610 lb-ft torque output with the 6 speed manual. I don't know what the pickups output is with the manual.
rvert10 wrote: I own the 08 Dodge 6.7 and I've been told or lied to that the Cummins can put out more than it does. I have nothing to support that claim. Has anyone heard the same thing? And one other item of interest Long haul trukers prefer the inline 6 is this true?
All the current Diesel engine offerings are capable of making more power with an AM tune.
See. there you go. IF you change your radio from FM to AM. It will run better
How about Sirus XM will that work
Yowzaa! So that's why my truck is so slow... I've been listening to FM radio!! . Great Scott!!
I'll have to start listening to AM news, sports and oldies stations from now on!
For better mileage I can sent you some old 8 tracks 4 seasons or Bob Dylan, Carle Simon "your so vain" might just fit the bill here
eightballsidepocket wrote: Mentioned by a few members here was the 68RFE Tranny being the weak point.
I've never heard this before.
I heard that it is as stout as the Allison or the Ford Auto Tranny.
The Dodge 68RFE tranny is maxed out on the regular output engine. When Dodge upped the torque to 800lbs, they put in a new converter and added an ATF to water cooler.
Also with the new max tow package that you can get with the HO engine, Dodge upgraded the AAM 4:10 rear axle with larger bearings and a stronger LSD.
The Dodge tranny weighs around 75lbs less than the Allison or Ford Tranny.
If you want the manual tranny, you get a derated engine, that is less than the 350HP/650lb non HO engine.
I have an 08 1 ton Dodge(75k miles), and have just put in the 3rd auto tranny. In each failure, 2nd and 3rd gear failed. To be fair, this truck is used on the ranch and 2nd and 3rd gear is used most of the time, hauling either a goose neck cattle trailer or flat bed in very steep roads.
Our Fords( 95, 350's with both gas and diesel engines) and our 95 Dodge 5.9 Cummins haven't had a problem.
Our 2011 Ford hasn't had a problems, but it is still new.
The Dodge cab/chassis trucks come with 305 hp and 610 lb-ft torque output with the 6 speed manual. I don't know what the pickups output is with the manual.
Don't intend to hijack, but curious if the 610lb-ft of the chassis/cab multiplied by the 1st gear in the manual puts out as much or more tq than the 800lb-ft version does in 1st with the 6-speed auto?
BManning baking in Phoenix
2008 Ford Super Duty F250 XLT, 4x4, crew cab, 6.75' bed
5.4L V8 300hp/365ft-lb, 5sp Torqshift, 4.30 AAM gears
9400lb GVW 11200lb tow
2007 Volvo XC90 AWD V8
4.4L 311hp/325ft-lb, 6sp Aisin, loaded
6100lb GVW 5000lb tow
garysol wrote: All that I know is this. My poor old under powered 6.7 Cummins powered truck pulled our 14,000lbs 5th wheel 60mph up every mountain pass from Pittsburgh to DC. Sure the mountains here are not of the same size as the Rockies but for those of you who travel the PA turnpike know that there are some plenty steep climbs through the Alleghenies.
As did my 04 305hp/555tq with a bone stock 48RE with 170,000 miles on it. My combined weight was around 21K and I had the Smarty Jr. on the 40hp tune.
skyhammer wrote: Also with the new max tow package that you can get with the HO engine, Dodge upgraded the AAM 4:10 rear axle with larger bearings and a stronger LSD.
First I have heard of a stronger LSD as there would be no need for it. The Max tow package did give you a new rear-axle pinion, new helical gears, upgraded bearings, and finned aluminum differential cover though. Dodge has always had stronger bearings and axles on the 11.5" AAM compared to the GM version of the 11.5" AAM.
eightballsidepocket wrote: Mentioned by a few members here was the 68RFE Tranny being the weak point.
I've never heard this before.
I heard that it is as stout as the Allison or the Ford Auto Tranny.
The Dodge 68RFE tranny is maxed out on the regular output engine. When Dodge upped the torque to 800lbs, they put in a new converter and added an ATF to water cooler.
Also with the new max tow package that you can get with the HO engine, Dodge upgraded the AAM 4:10 rear axle with larger bearings and a stronger LSD.
The Dodge tranny weighs around 75lbs less than the Allison or Ford Tranny.
If you want the manual tranny, you get a derated engine, that is less than the 350HP/650lb non HO engine.
I have an 08 1 ton Dodge(75k miles), and have just put in the 3rd auto tranny. In each failure, 2nd and 3rd gear failed. To be fair, this truck is used on the ranch and 2nd and 3rd gear is used most of the time, hauling either a goose neck cattle trailer or flat bed in very steep roads.
Our Fords( 95, 350's with both gas and diesel engines) and our 95 Dodge 5.9 Cummins haven't had a problem.
Our 2011 Ford hasn't had a problems, but it is still new.
The Dodge cab/chassis trucks come with 305 hp and 610 lb-ft torque output with the 6 speed manual. I don't know what the pickups output is with the manual.
350/610
2013 Arctic Fox 22GQ
2011 Ram 2500 CC LB CTD G56 3.42 Mineral Gray
Jarlaxle wrote: Did you read the post DIRECTLY ABOVE YOURS?
Yes, I did read it. Still didn't answer my question. I haven't seen a complaint yet from anyone who actually OWNS a 68RFE. The fact that Chrysler is upgrading the torque converter and adding a bigger cooler may increase the longevity due to more demands on the transmission by the higher torque output but it still doesn't mean there is anything wrong with the transmission as it was designed to be used with the 6.7 350/650 prior to the 350/800 engine upgrade. Do you by chance, have a 68RFE in your school bus?
B.O.
2011 Big Country 3250TS...2010 Ram CC Laramie 4wd Cummins
15k Super Glide, Firestone Ride Rite, TrailAir Tri-Glide
Michelin XPS Ribs. Just say no to Chinese tires.
Twin Cities Mn.
eightballsidepocket wrote: Mentioned by a few members here was the 68RFE Tranny being the weak point.
I've never heard this before.
I heard that it is as stout as the Allison or the Ford Auto Tranny.
The Dodge 68RFE tranny is maxed out on the regular output engine. When Dodge upped the torque to 800lbs, they put in a new converter and added an ATF to water cooler.
Also with the new max tow package that you can get with the HO engine, Dodge upgraded the AAM 4:10 rear axle with larger bearings and a stronger LSD.
The Dodge tranny weighs around 75lbs less than the Allison or Ford Tranny.
If you want the manual tranny, you get a derated engine, that is less than the 350HP/650lb non HO engine.
I have an 08 1 ton Dodge(75k miles), and have just put in the 3rd auto tranny. In each failure, 2nd and 3rd gear failed. To be fair, this truck is used on the ranch and 2nd and 3rd gear is used most of the time, hauling either a goose neck cattle trailer or flat bed in very steep roads.
Our Fords( 95, 350's with both gas and diesel engines) and our 95 Dodge 5.9 Cummins haven't had a problem.
Our 2011 Ford hasn't had a problems, but it is still new.
The Dodge cab/chassis trucks come with 305 hp and 610 lb-ft torque output with the 6 speed manual. I don't know what the pickups output is with the manual.
Don't intend to hijack, but curious if the 610lb-ft of the chassis/cab multiplied by the 1st gear in the manual puts out as much or more tq than the 800lb-ft version does in 1st with the 6-speed auto?
610 x 6.29 x 4.10 = 15,731 lb-ft
800 x 3.23 x 1.5 x 4.10 = 15,892 lb-ft
They appear to be fairly closely matched, if using 1.5 as the torque converter factor in the auto.
I used 4.10 as the axle ratio because 4.10 is the only ratio is available in both 2500/3500 pickups with the auto and manual, as well as 3500/4500 cab/chassis trucks with the auto and manual.
. Great Scott!! 
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