360 Hp Cummins

[meubank]

I was wondering if anybody had an experience with a ISB-XT turbo diesel 6.7 liter, 360 hp @ 2600 rpm, 800 ft. lbs torque @ 1800 rpm

My main concern is will it be enough pulling a 5600# Avalanche thru hill and mountains??

[et2]

eheading wrote:
What brand of RV are you looking at? It is extremely rare for a 40' motorhome of any price range to have the IXB-6.7 engine in it. A lot of them have the 360hp ISC engine in them that has 950 ft-lb of torque. Unless you are bothered by the slower hill climbing ability of this combination, in my opinion it would be more than adequate to meet your needs.

Ed Headington

I'm not so sure you're accurate. I think you meant ISB 6.7. Many motorhomes are (were) equipped with the ISB 6.7. 0ur 2013 Fleetwood Expedition has it in it - 360 hspwr & 800 lb-ft torque. It's almost 42' long. I believe the Discovery (2013) got the ISC 6.9 - 380 hspwr - 1200 lb-ft torque.

We've had no issues pulling a 4600 lb Jeep Liberty. It's rated to pull 10,000 lbs, I believe it will.

[dubdub07]

I lived in Clovis for 3.4 years and went to Amarillo at least 50 times and never once saw a hill big enough to worry about. For the passes in my state, being 35-39K combined with a 6.7 is a tall order, but it will pull it. The 3000MH Allison will do just fine but you will be 35mph up most passes in the Colorado, if not a bit slower. Mileage should be decent, 8-9mpg.

[dieselmaniac]

Johnny G1 wrote:
I don't know, my old 12 valve tows and get 12.5 mpg towing all over North America and its 210 hp so your 360 hp should do a good enough job.

I think u mean 12.5 Canadian mileage not US? This unit hes talking about is a way heavier than your unit plus he wants to drag along 6K so around 39000 lbs gross.Your 210HP is way under powered in 99% of
most peoples standards of decent power

[JimM68]

Ed, I checked the specs, Winnie uses the ISB in the 34 and 36' Journeys, moving up to the ISC in the 40 footer and ISL in the 42'.

IMHO an ISB is not the first choice in a big coach.

[eheading]

What brand of RV are you looking at? It is extremely rare for a 40' motorhome of any price range to have the IXB-6.7 engine in it. A lot of them have the 360hp ISC engine in them that has 950 ft-lb of torque. Unless you are bothered by the slower hill climbing ability of this combination, in my opinion it would be more than adequate to meet your needs.

Ed Headington

[Johnny_G1]

I don't know, my old 12 valve tows and get 12.5 mpg towing all over North America and its 210 hp so your 360 hp should do a good enough job.

[ScottG]

Or get a smaller toad.

[Executive45]

I'm assuming you've not purchased the coach yet. My advice would be to look for a little more HP/Torque. You'll struggle going up mountains pulling 6k behind you. The coach could handle it but I know I wouldn't be happy with it. I had a Dynasty that was underpowered and know from experience it's a drag. I'm not a racer but I hate to 'abuse' the equipment and I felt like the coach was continually struggling just to keep up. JMHO, of course....Dennis

[zb39]

You will be going slow up the mountains, that doesn't bother some people. That is the same engine in my 8000lb pickup. Good luck with whatever you do.

[meubank]

thanks for all your help

[rr2254545]

meubank wrote:
are you able to maintain speed limit on the flat?

No problems all the speed I want I go a max 65 could do more but I do not choose to

[meubank]

are you able to maintain speed limit on the flat?

[rr2254545]

I am 42,350 and 32,350 37 ft, pulling 4400 lbs, no problems but I do down shift on really big mountains and hills.

I have 21,000 miles on the MH and have passed over the rockies two



So the answer is yes

[kaydeejay]

meubank wrote:
The coach is 40'7" OAL
GVWR=31,000#
GCWR=41,000#

Those numbers say it can tow at least 10,000# if the hitch is rated high enough to do it.

[meubank]

The coach is 40'7" OAL
GVWR=31,000#
GCWR=41,000#