Ford super duty 3.31 rear end. Will it be a big mistake. ?

Folks,
Once again I am going to request that you only quote the person you are responding to instead of just quoting a whole string of posts. We don't need to read or scroll through repeating, redundant posts over and over again. If you are responding to a post immediately above then there is no need to quote at all.

I am going to start deleting posts that have long, repeating, unnecessary quotes in them instead of trying to clean up the posts via editing as I have been doing.

Please be considerate of the members in posting and quoting other members. Thank you!

For more discussion on this topic see this thread I started in 2018.
Barney

Its sounding like the Powerstroke is catching up. As said my sons got one coming. He is a blue Koolaid guy, me I have had them all. This Ram I have has done well. To be honest I loved my old 7.3 . If it had the power I needed for the bigger fifth wheel I had , I most likely would still have it. I am far from a new truck every year guy. I had it nearly 16 years , it had low miles 130K , looked like new when I sold it ,have seen it around town a couple times since .

I don't usually get into these truck debates , first off I don't know that much about a lot of the stuff about them. I do all my own maintenance , all the fluids ,brakes etc. I know how to take care of them ,and thats what is important to me . I have found with the exhaust brake on this Cummins ,as said it works best on cruise control ,letting it do its thing , I am usually off ,and on the throttle if I don't use cruise control . The shorter grades its alright , but the long grade ,and no sharp turns ,cruise control ,and let it do its thing .

If you have ever come down to Bull Head City in Arizona from Las Vegas ,that is a long hill that you would really appreciate good exhaust braking , and using cruise control .

cummins2014 wrote:



I understad all you are saying ,just didn't get you saying I have more tires then me. I have a SRW 3500 Ram Cummins . As said yes ,Ford had no exhaust brake in the earlier Powerstrokes, I am aware of them having one one now , have read many times ,they were no where near as effective as the Cummins , it sounds like they have finally caught up , which is great. I know the benefit of having a good exhaust brake while towing. , or anytime . I run with tow haul ,and exhaust brake on regardless of what I am doing, unless there are slick roads .

Its good to hear the Ford has caught up with a effective exhaust brake ,my son has a new 2021 on order, and plans to be towing a fifth wheel.

People who have run both the new Powestroke and Cummins claim the Cummins has a stronger exhaust brake. I think you need higher engine rpm with the Powerstroke to get the same measure of braking as the Ram. However the 10 speed can be used to give you that higher rpm.

4x4ord wrote:

cummins2014 wrote:
I have yet to climb a grade with this 6.7 Cummins towing a 38’ and 35’ fifth wheel here in the mountain west wishing I had more power :B

But,... there have likely been plenty of people behind you wishing you had more power.:B

You got that right , I got stuck behind a couple Fords last time out , I would of shown them the power , but the darn 2 lane roads :B

Lynnmor wrote:


You do understand that all the braking from an exhaust brake is done thru the rear wheels of the truck? That heavy truck and trailer is pushing on those two tires, and everything else is going along for the ride.

All 6.7 Fords had exhaust braking as claimed, previous engines had none and there was no claim that they did. Yes, later models had more braking and a button to play with.

I understad all you are saying ,just didn't get you saying I have more tires then me. I have a SRW 3500 Ram Cummins . As said yes ,Ford had no exhaust brake in the earlier Powerstrokes, I am aware of them having one one now , have read many times ,they were no where near as effective as the Cummins , it sounds like they have finally caught up , which is great. I know the benefit of having a good exhaust brake while towing. , or anytime . I run with tow haul ,and exhaust brake on regardless of what I am doing, unless there are slick roads .

Its good to hear the Ford has caught up with a effective exhaust brake ,my son has a new 2021 on order, and plans to be towing a fifth wheel.

cummins2014 wrote:

Lynnmor wrote:

cummins2014 wrote:


There is no tapping brakes with a Cummins , and I am towing the same weight . I spend nearly 16 years in a Ford Superduty, I know all about them ,they are okay, they got nothing on the Cummins .

Perhaps you never owned a 6.7 Ford diesel or didn't drive one enough to appreciate how they work. Since my rear tires wear faster than the front now, I don't want a pair of tires doing even more work. Yes, I know you have more tires than me. Would sliding the rear tires to slow down satisfy your need for considerable exhaust braking?

You lost me on whatever you are trying to say . I only have four tires . My comment was simple the Cummins is second to none as far as how well the exhaust brake works, if the Ford now works as well , that’s great . As far as the Fords go there was a day the exhaust brake on their Powerstroke was non existent, I’m sure they have improved .

You do understand that all the braking from an exhaust brake is done thru the rear wheels of the truck? That heavy truck and trailer is pushing on those two tires, and everything else is going along for the ride.

All 6.7 Fords had exhaust braking as claimed, previous engines had none and there was no claim that they did. Yes, later models had more braking and a button to play with.

cummins2014 wrote:
I have yet to climb a grade with this 6.7 Cummins towing a 38’ and 35’ fifth wheel here in the mountain west wishing I had more power :B

But,... there have likely been plenty of people behind you wishing you had more power.:B

cummins2014 wrote:

StirCrazy wrote:

blofgren wrote:


If you Ford guys towed with a Cummins you would be absolutely amazed.....I usually have to give my truck some throttle when descending BC passes when pulling my 16k fiver loaded for a 3 week trip. And no cruise control or automatic braking of the service brakes.

but then we would be seen in a Dodge ;) when I bought my 2014 (in 2016) I tried out all the big three, dodge was actoula on the bottom of my list. rode rouch, and felt very enimic driving around town. I am sure it pulls like a freight train but it just wasnt a fun or nice driving experiance to me.

the biggest thing is the fords never had an "exhaust brake" untill the 2015 model, before then it was just using the VV turbo which works but not near as good as a real exhaust brake. My VVT will hold 14000lbs of 5th wheel going down the coq and I only have to tap the brakes two or three times at the big hill before the tunnels traveling from kamloops to van. my buddy has a 2017 and a bit heavier of a trailer and he sets his cruise and doesnt touch his brakes all the way unless trafic is slower.

Steve

There is no tapping brakes with a Cummins , and I am towing the same weight . I spend nearly 16 years in a Ford Superduty, I know all about them ,they are okay, they got nothing on the Cummins .

except for more torque, more HP and a way better auto tranny ...

that is with mine that doesnt have a engine brake. newer ones do so same as the dodge no tapping brakes.

GIB2 wrote:
Nobody is speaking about tow haul & heavy loads. My 2020 GM 10 speed has almost identical gear ratios in every gear to Ford . Although I have no Ford manual to read ,my GM manual claims that it will not go beyond 7th gear in tow haul. I would expect Ford the same. One thing I know for sure they all blow the doors off semis in the mountains pulling 20,000 lb. load.

That's interesting the 10 speeds become 7 speeds when towing:@
I'm liking my 6 speed even more now.

Nobody is speaking about tow haul & heavy loads. My 2020 GM 10 speed has almost identical gear ratios in every gear to Ford . Although I have no Ford manual to read ,my GM manual claims that it will not go beyond 7th gear in tow haul. I would expect Ford the same. One thing I know for sure they all blow the doors off semis in the mountains pulling 20,000 lb. load.