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Old 11-01-2014, 05:45 PM   #1
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ISL 400 enough power?

Is a Cummins Diesel ISL 400 enough power to tow a full size F150 Ford 4X4 PU?
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Old 11-01-2014, 05:54 PM   #2
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We have an ISL 370 & have been towing a Jeep Liberty 4X4 for 7 years. No problems & most of the time we don't even know it's there. You should be fine.
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Old 11-01-2014, 05:56 PM   #3
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We have a 500 in ours and it doesn't really know the PU is back there.
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Old 11-01-2014, 06:17 PM   #4
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What's the weight of your coach + the pickup. If it's under the Gross weight design of the coach I'm sure it will pull it.

I own a 2002 Windsor which has the older chassis similar to the Dynasty and up, it is heavy. We tow a 2005 Jeep Grand Cherokee with the 5.7 Hemi, which is a heavy vehicle. We don't hardly know it is back there except for the rear view camera.
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Old 11-01-2014, 07:40 PM   #5
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My Endeavor has the 400 ISL. I tow a 9000 lb. race car trailer or sometimes a smaller enclosed trailer with 2 motorcycles that weighs about 3000 lb. total.

I almost forget which trailer is back there until I remember I'm going to the race track.

Flat towing a half ton pickup should be a piece of cake for your coach.
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Old 11-02-2014, 08:55 AM   #6
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Quote:
Originally Posted by Salmon River View Post
Is a Cummins Diesel ISL 400 enough power to tow a full size F150 Ford 4X4 PU?
Back in the late 1980s, most 18 wheelers had diesel engines rated around 400hp or less. I remember it was a big deal when the rating on the good ol' Cummins "855" went to 444hp. Think about that. They were pulling 72,000 lb loads all over this country...up the mountains and back down.

The total weight of your rig, including the truck, will be far less. Your chassis is probably rated to pull at least 10,000 lbs. The only questions remaining are how fast will it pull up a long, steep grade before saying "uncle" and how much fuel it will burn.
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Old 11-02-2014, 09:11 AM   #7
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Not sure what part of the country you are touring ... Our MH is about 38,000 pounds loaded and we pull a 3500 pound Wrangler up and down Colorado "hills" without problem (you gotta gear down on the big ones!). Down on the flat, I can't tell its back there; imagine it would be the same with a pickup truck. If you ran into trouble towing the F150 to elevation, you could just unhook and drive it to summit (then re-hook at the top). I see this a lot in Colorado when the flat-landers come to visit. \ken
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Old 11-02-2014, 09:21 AM   #8
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Just pulled Eisenhower east bound, which is really the Johnson tunnel, at 33 mph. The MH and load towed weigh ~40k.
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Old 11-02-2014, 09:33 AM   #9
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Coma: Did you watch your gas mileage on that ascent? Was it 2.X mpg? What does that hill cost in $$$, I wonder? \ken
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Old 11-02-2014, 10:24 AM   #10
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My Ventana LE was equipped with an ISB 340 and we pulled a Chevy Traverse which weighed right at 5,000 lbs. No problem pulling that load although we didn't run through Colorado, but it was fine through the grades in the Appalachians. The coach was actually much nicer to drive pulling the towd.

Checking online, the curb weight of the F-150 4x4 is a few hundred lbs more than our Traverse, can't imagine you would have any problems pulling it with the ISL 400.
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Old 11-02-2014, 02:04 PM   #11
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Coma: Did you watch your gas mileage on that ascent? Was it 2.X mpg? What does that hill cost in $$$, I wonder? \ken
It's about ~13 miles. ~2mpg sounds about right, so $25-30 to pull the hill. Just part of the $900 to drive to FL.
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Old 11-02-2014, 02:23 PM   #12
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Simple answer YES.
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Old 11-02-2014, 03:19 PM   #13
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Quote:
Originally Posted by Air Baron View Post
Back in the late 1980s, most 18 wheelers had diesel engines rated around 400hp or less. I remember it was a big deal when the rating on the good ol' Cummins "855" went to 444hp. Think about that. They were pulling 72,000 lb loads all over this country...up the mountains and back down.

The total weight of your rig, including the truck, will be far less. Your chassis is probably rated to pull at least 10,000 lbs. The only questions remaining are how fast will it pull up a long, steep grade before saying "uncle" and how much fuel it will burn.
The year was 1971 and myself and coworkers were hauling groceries all over the northeast with "B" model Macks that were powered by 711 cu in naturally aspirated Mack engines backed up with 10 speed trannys. I think they turned out something like 190 HP. When the company traded the old "B" models in for the newer "R" models with the 673 cu in turbocharged, low rpm, high torque engines that had 5 speed trannys that put out 237 HP we thought we all died and went to heaven. BTW, we were maxed out at around 73,000 lbs every day.

So, yes, I think your 400 ISL will handle that F150 just fine.
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Old 11-02-2014, 04:11 PM   #14
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Coma: Did you watch your gas mileage on that ascent? Was it 2.X mpg? What does that hill cost in $$$, I wonder? \ken
Why would we care!?!?!?
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