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Old 04-08-2016, 08:49 AM   #121
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Originally Posted by Kenny kustom View Post
But at least the dirty max won't stretch the timing chain, while heading up the mountain.


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Time to give the old timing chain post a rest. I guess I could say something about the injector issues of past Dmaxes, but you'd just point out that the injector issue is no longer a problem while ignoring the fact that the EB timing chain issue is also no longer an issue.
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Old 04-08-2016, 11:20 AM   #122
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Be interesting to hear some towing experiences with the new Nissan Titan XD with the 5L Cummins V8 turbo diesel. It has 100 less lb-ft of torque than the "low-torque" 6.7L Cummins, but the truck weighs only 100 lbs. less than a Ram 2500 crew cab diesel. So I'm not sure what advantages it will provide.
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Old 04-08-2016, 02:23 PM   #123
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Diesels, noisy?
Guess too many have had that late night experience in the state park campground where the neighbor's diesel HAD to idle for Ĺ hour.
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Old 04-08-2016, 05:41 PM   #124
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I bet your hubby has already thought about this but we ran into a similar situation when we had a suburban. Going through WV mountains we had it floored and dropped to just 37 MPH! Turns out the fuel pump gave up. We were losing fuel pressure big time! Replaced the fuel pump and a couple years later replaced the truck. Look for a lightly used 3/4 ton. We love our Ram but stayed with a gas engine.
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Old 04-08-2016, 05:47 PM   #125
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Originally Posted by MilCop4523 View Post
have you noticed the fuel mileage decrease in the past few years on the truck in general?
i have a buddy that is a professional hauler that was watching his drop like a rock and stopped at a service rest area and was talking with an 18 wheel hauler and was told to power wash his rad and transmission cooler annually. and be prepared to watch his mileage increase like a balloon...
so he tried just that.

Apparently the fan pulls dust through where the fan is situated but the sides get clogged with dust and reduce cooling and cause mileage to suffer...
That makes a lot of sense. In my business we used to pressure wash HVAC units for the same thing used soft water to prevent lime scale buildup. My F 250 pull a lot air in the big front grill while towing.

Cooler engine, cooler trans and less fuel worth a try for sure.
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Old 04-09-2016, 03:48 PM   #126
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A 6 % grade at altitude will humble just about anything. This is why Diesel turbocharged has such an advantage.
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Old 04-09-2016, 04:28 PM   #127
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Hey all!

We pulled our 35' Apex 300bhs, 5900 lbs through the mountains 2 weeks ago and were surprised at the amount of power the truck lacked on the steeper passes. We watched our temp climb as we went up a 6% grade, and the 7% grade later was just pitiful. We have a 2005 5.7 Silverado Z71 4x4 with the tow package. The truck was floored and losing speed.
Is this normal? Husband is now on a truck shopping binge, but I think many may experience this, just not sure. We stayed in the right lane and just kept it floored. We made it, though our alternator decided it was time to go. (That's another story).

What do you drive? What does your trailer weigh? What are your experiences? What are your thoughts on this?

P.S. The truck has 4:10 gears.
I'm not aware of a 5.7L being available in that truck for that year.

But......

There's a lot of things I'm not aware of
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Old 04-10-2016, 08:19 PM   #128
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Without a doubt, it is a great motor. Ford needs to do a V8 ecoboost!!! LOL
Too right, and I actually heard from a Ford mechanic that such a thing might be coming for the 2018's.

I don't know how well informed he really is, and he didn't mention specifically whether a V6 or V8, but he indicated that a 4.2L ecoboost is in the works.

Considering that the 3.5L V6 ecoboost has similar hp and torque to the 6.2L V8 (albeit with a very different torque curve), I'd love to see a larger ecoboost in the F250/350.
A 4.2L-5.0L twin turbo in the F250/F350 with per-cc efficiency similar to the current ecoboost would be a force to be reckoned with.
It's obviously not happening in the 2017's since Force has already announced the (largely unchanged) engine line-up, but I'd love to see that in the 2018's
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Old 04-10-2016, 09:20 PM   #129
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Originally Posted by ApexBunk View Post
Hey all!

We pulled our 35' Apex 300bhs, 5900 lbs through the mountains 2 weeks ago and were surprised at the amount of power the truck lacked on the steeper passes. We watched our temp climb as we went up a 6% grade, and the 7% grade later was just pitiful. We have a 2005 5.7 Silverado Z71 4x4 with the tow package. The truck was floored and losing speed.
Is this normal? Husband is now on a truck shopping binge, but I think many may experience this, just not sure. We stayed in the right lane and just kept it floored. We made it, though our alternator decided it was time to go. (That's another story).

What do you drive? What does your trailer weigh? What are your experiences? What are your thoughts on this?

P.S. The truck has 4:10 gears.

IMO, keeping it floored on a 6% grade is the last thing you want to do. Pushing your equipment to the limit like that is going to break something. Better to back off and ease up the mountain at the truck's pace.
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Old 04-11-2016, 02:35 PM   #130
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Elevation and the thin air are not conducive to producing power with a naturally aspirated engine. Any motor with forced induction, turbo or supercharger, is going to fare much better in those situations.

So, either diesel or a F/I gasser like the Ecoboost. Even the bigger 6.4 Hemi is going to struggle. The engine needs air. If it's not being forced in it's not going to get it.
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