I see where you're coming from Nick, but I've also had conversations with others who have tow rigs running 2's and they wish they would have gone with smaller sticks. You just can't use that much fuel towing and keep it cool in my opinion. I'm not saying you can't tow with 2's, because clearly you can, I'm just saying it seems like a lot of guys that are trying to do so can't use all the fuel and keep it cool.

You can use the fuel in short runs, so if you're talking about having a fun truck that you can also do some sled pulling with, or take to the track on occasion, then I think 2's or bigger are a great way to go, but for a dedicated towing machine, I just don't think you need anything bigger than stage 1.5's. Again, it's just my opinion, and everyone can have their own, but that's what I'm seeing.

I do think if you had a bigger turbo than 66mm you could use the 2's or bigger, but then you're going to be having some issues with smoke and lag down low. It's a fine line.

 

That's why I said I don't completely agree with you. I'm in the process of milking so I'm being brief and not well thought out LOL. One other thing I was going to say was tuning has a massive impact on all aspects. I know I have to send my chip back cause I'm not a big fan of them. Which probably is another downside to 2's. I can make a dodge owner say that's a lot of smoke when I'm in economy. . I've got 3 tunes I want trend down and 2 to crank up a bit.

 

That was a weird double post...

 

I'm on my phone. It does funny thing lol

 

I'm more with Nate on this one. The new F450-550 cab and chasis trucks come with the 6.7 detuned to 300 HP and 660 lb-ft, IIRC. You don't need anymore than that for a towing rig.
The only reason the F250-450 pickup trucks have so much HP is to compete in the marketplace. If you want a truly reliable 500+ hp towing engine you need a bigger engine, like 12 - 15 liters.


I suppose if you really wanted to do it, you could, but we'd be talking stage 2-3 injectors, twin turbos with wastegates, multiple IC, and WM injection.

 

Phil, where would you put a 2nd IC?! I could understand twins, but why not just procharge?

 

Agreed fully regarding injectors. The D66 is trash. That all being said he is trying to pull 28k. The 2015 F350 is rated for 26500, the 450 and up a bit more. Out of the box the 6.7 hits 440/860 chp/ctq. My point is the guy needs a bigger truck if he is going to pull this weight at all. Let alone the fact the truck simply will not stop with that much behind it. (Even with a manual I scared the living crap out of myself a couple times in the mountains with and OBS and very heavy loads) Even a DRW 2015 450 is going to be loaded out at a max and have a darn hard time on any grade with that load behind it. Towing consistently hard with any light duty truck like our 7.3s at a hp output of 500+ HP, I personally don't think it will last long at all.

Those quoting you need the extra hp and tq. I do not think it is necessary, benefit oh heck yeah. A good friend of mine pulls a 48' tripple axle goose fully loaded all the times for a living behind a Chebby c6500 kodiak with a bone stock LLY duramax in it. It gets 10 mpg loaded, maybe 11 unloaded. Gear ratio and tire diameter play quite a bit in towing heavy. He drives 65 all day every day. Does just fine. Yeah hitting the hills it works, but I have never seen a big rigs cruising the steep mountain passes at the speed limit.

I also agree with just getting a Detroit if you want longevity out of it hauling.

 

Turbo to 1st IC to 2nd turbo to 2nd IC to engine
I'm sure there is more than one way to do it, my point is just that its hard and expensive.

 

Exactly my point. HP and Torque aren't the only issue with towing heavy.

 

I'm not saying you need the extra power by any means. And let's be honest even if you have it you won't be able to control temps anyway. That's why I said it would be cool to see 2 tow rigs with different injectors on a dyno. I bought the 2's for fun. Towing wise the truck would get the job done stock.

 

I wonder if you implemented an in-line fuel cooler, what effect that would have. Lower combustion temps should lower EGT's right? Even if it's only by a couple degrees. That being said, I was talking to a guy that did a hood stack on his truck, and claimed there was about a 50* difference in EGT's from the aftermarket DP.

 

Fuel cooler won't help since the fuel flows through theblazing hot cylinder heads to get into the injectors.
Lol, yeah. Hoodstack. Because I need it for my EGTs.

Besides 50* is a drop in the bucket when you're towing with big sticks. You're capable for 1600*. 50 degrees isn't much of a difference when you need to be around 1200. Sounds like a good excuse though!

 

Oh gosh you have no idea how bad I want to hack a huge hole in my hood...my hood is junk anyway...maybe ill be like somebody else at rre lol

You fellas are really making me curious to see how my combo tows...that IS after all the whole reason to pull the camper.
Yea 225/100s and s468 to pull a 7k lb bumper pull camper..yea..say itfast and itsounds better lol

 

It sounds better if you don't say what your camper is. Then we all are thinking, "well with a setup like that..."

 

In actuality....a setup like that = broken e4od. Lol