2014 Ram 3500 without Aisin Tranny

DUALLY

joshuajim wrote:
My opinion of DRW trucks is similar ti twin engine aircraft. When one engine fails, the second one is only there to carry you to the scene of the crash.

On a DRW, if you get a nail in one dual and it goes flat, you probably will not notice it until it shreds, but by that time the other tire is ruined by carrying twice the design load and is trash also. Buy 2 tires instead of one.

............or.........just the opposite of your analysis...6 of 1, half dozen the other....tire goes flat, the other will carry you to get repair or both replaced.....


A good pilot very well may land that one engine airplane safely, if both go out, a VERY GOOD pilot MIGHT be able to glide to safety..one just never knows...not a very good analogy..

My opinion of DRW trucks is similar ti twin engine aircraft. When one engine fails, the second one is only there to carry you to the scene of the crash.

On a DRW, if you get a nail in one dual and it goes flat, you probably will not notice it until it shreds, but by that time the other tire is ruined by carrying twice the design load and is trash also. Buy 2 tires instead of one.

I had an 2008 3500 with the 68rfe and now I tow with a 2014 3500 SRW with the 68rfe. GVWR of our rig is 15,500. The truck squats a couple of inches and tows the load with no drama. My SRW's payload rating is 4,022 and max tow rating 17,150. In 6 years of owning and towing with the 68 we have never had any tranny issues at all.

I had a 2010 Ram 3500 CC/LB/DRW 4X4 with the 68RFE..it had a GVWR of 12,200#, the 2012 that I had for about 6 months was also a 3500 CC/LB/DRW/4X4 HO Cummins with 68RFE, GVW was 12,300# and a GCWR of 25,000#. I towed my 5er, with a GVW of 16,950# and loaded anywhere from 15,985# to 16,200# with both of these trucks all through the mountains of NC, TN, VA and WV...the 68RFE never gave me the first problem, never an issue. It's a good tranny; add the EB and T/H to the equation and you got a towing aninmal . All three of my trucks had/has the 4:10 gearing so that may make some difference. Believe the Ram SRW is only offered with the 4:42, but again, if 16,000# or under, don't see an issue with the 3500 SRW truck towing the OP's 5er.

brholt wrote:

AH64ID wrote:
All diesel's have hydro, there is no vacuum on a diesel.

Thanks for the link, I couldn't find that information when I searched earlier.

Pretty sure the F250 Diesel uses Vacuum boost. As I understand it the " 6.7's have a really nice wet vacuum pump mounted on the front cover driven off the opposite side of the gear for the HP fuel pump. They use the vacuum for waste gate control and EGR cooler bypass control. ".

You need to step up to the F350 to get hydro-boost in a diesel, DRW in a gas

I guess it's possible, but I understood them to use hydro-boost.

AH64ID wrote:
All diesel's have hydro, there is no vacuum on a diesel.

Thanks for the link, I couldn't find that information when I searched earlier.

Pretty sure the F250 Diesel uses Vacuum boost. As I understand it the " 6.7's have a really nice wet vacuum pump mounted on the front cover driven off the opposite side of the gear for the HP fuel pump. They use the vacuum for waste gate control and EGR cooler bypass control. ".

You need to step up to the F350 to get hydro-boost in a diesel, DRW in a gas

All diesel's have hydro, there is no vacuum on a diesel.

Thanks for the link, I couldn't find that information when I searched earlier.

AH64ID wrote:

brholt wrote:


All other things being equal this is probably accurate. However, in late model trucks, at least Ford, you also get different components such as better brakes and a stronger rear axle.

Ford advertises the same brakes on all pickups, F-250 thru F-450.

Same rotor Diameter (14.29).
However, rear brakes on DRW (F350 and F450) get bigger piston calipers (2.13 instead of 1.89) and get hydro boost instead of Vacuum.

See page 83 here:

2013 SuperDuty specs

2014 and 2015's are the same except for the F450 with the 19.5 wheels.

brholt wrote:


All other things being equal this is probably accurate. However, in late model trucks, at least Ford, you also get different components such as better brakes and a stronger rear axle.

Ford advertises the same brakes on all pickups, F-250 thru F-450.

The rear axle is different, a Dana 80 vs Sterling 10.50".

From 03-12 Dodge used the same axle for SRW or DRW, which is the same axle GM has used since 01, IIRC, the AAM 11.5. Dodge now uses the AAM 11.8 on some 3500 applications, which is a slightly stronger variant of the 11.5.

All of the axles are rated for more than any RAWR put on the trucks, so it's not really a big deal.