Phil and Micky Posted April 22, 2015 Report Share Posted April 22, 2015 Hello all, Does anyone here know if this is a good engine (340HP 6.7L CUMMINS) for a 40ft DP that will be pulling a toad? Phil Link to comment Share on other sites More sharing options...
wa_desert_rat Posted April 22, 2015 Report Share Posted April 22, 2015 Some people say you need at least 1hp for every 1,000 pounds of weight on a diesel pusher. A 40-foot DP could get over 34,000 lbs pretty easily nowadays but it depends on the rig and it also depends on what it is you're towing. Modern DPs generally go above that figure; sometimes well above, at least for the top-of-the-line models. We have a 36' DP that tops out at 22,500 lbs and was fitted with a 240hp 5.7L Cummins. But the original owner put a Banks Stinger package on it and that boosts the hp up to around 290hp (according to Banks) and greatly increases torque. We tow a pretty light Jeep Wrangler with a soft top and sides, half doors and 4cyl engine (3100lbs) and our rig gets reasonable fuel mileage (10.4mpg over a 2,000 mile trip Dec/Jan) and still manages to pass the big trucks on the hills. It also depends on how you drive. If you're patient and do 200 miles a day it might be just fine. If you drive 400 miles a day or get upset when an 18-wheeler passes you on a mountain grade then not so much... WDR 1993 Foretravel U225 with Pacbrake and 5.9 Cummins with Banks 1999 Jeep Wrangler, 4" lift and 33" tires Raspberry Pi Coach Computer Ham Radio Link to comment Share on other sites More sharing options...
Phil and Micky Posted April 22, 2015 Author Report Share Posted April 22, 2015 Some people say you need at least 1hp for every 1,000 pounds of weight on a diesel pusher. A 40-foot DP could get over 34,000 lbs pretty easily nowadays but it depends on the rig and it also depends on what it is you're towing. Modern DPs generally go above that figure; sometimes well above, at least for the top-of-the-line models. We have a 36' DP that tops out at 22,500 lbs and was fitted with a 240hp 5.7L Cummins. But the original owner put a Banks Stinger package on it and that boosts the hp up to around 290hp (according to Banks) and greatly increases torque. We tow a pretty light Jeep Wrangler with a soft top and sides, half doors and 4cyl engine (3100lbs) and our rig gets reasonable fuel mileage (10.4mpg over a 2,000 mile trip Dec/Jan) and still manages to pass the big trucks on the hills. It also depends on how you drive. If you're patient and do 200 miles a day it might be just fine. If you drive 400 miles a day or get upset when an 18-wheeler passes you on a mountain grade then not so much... WDR WDR, Thank you for the quick reply. It looks like the combined weight of coach and toad will come in at about 31K. Thoughts? Phil Link to comment Share on other sites More sharing options...
Biker56 Posted April 22, 2015 Report Share Posted April 22, 2015 Depends on what you call good. It does get better MPG then others. It will get you up any hill pulling a toad. Usually faster then any 80K lb semi truck. But slower then the 400-600 HP MH engines. It does take less gal for a oil change then other diesels. Probably many more MH from 26' to 40' have that engine 5.9-6.7L then any other engine out there. Full Time since Oct. 199999 Discovery 34Q DP | ISBDatastorm | VMSpc | Co-Pilot Live | Pressure Pro2014 MKS Twin Turbo V6 365 HP Toad Link to comment Share on other sites More sharing options...
Jimalberta Posted April 22, 2015 Report Share Posted April 22, 2015 Nothing wrong with that engine. Ive seen lots of motorhomes with the 5.9 Cummins pulling toads and they do fine. You dont have to be the first one there. <p>....JIM and LINDA......2001 American Eagle 40 '.towing a GMC Sierra 1500 4X4 with RZR in the rear. 1999 JEEP Cherokee that we tow as well. IT IS A CONTENTED MAN WHO CAN APPRECIATE THE SCENERY ALONG A DETOUR. Link to comment Share on other sites More sharing options...
Newt Posted April 23, 2015 Report Share Posted April 23, 2015 Our PU has a 350 HP 6.7. It and the trailer are ~24,000#. Wolf Creek Pass was 3rd gear all the way up and down. Newt 2012 HitchHiker Discover America 345 LKSB 2009 Dodge/Cummins LIVINGSTON TX Link to comment Share on other sites More sharing options...
mrschwarz Posted April 23, 2015 Report Share Posted April 23, 2015 We had that engine in a 37' unit. It was reliable, got pretty good mileage and the performance was OK. I think it's a good engine. Michael 2017 Allegro Bus 45OPP Cummins ISL 450 Visit us at schwarz.org! Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.