rvupgradestore.com Composet Products Fridge Defend
RV Life Magazine RV Park Reviews RV Trip Wizard

Author Topic: 5.9 Cummins  (Read 1346 times)

G. Lee

  • Posts: 2
5.9 Cummins
« on: June 01, 2013, 08:23:37 AM »
 Hi, I'm looking at this Gulfstream with 80,000 km for $24,000
34ft. 5.9 Cummings Turbo Diesel rear engine. Spartan chassis. 6500Propane Generator. Air Ride. Hydraulic leveling. New tires. Heated basement. I'm wondering if that motor is a little light for this unit? I also plan to pull a 17' boat. Any insight would be greatly appreciated.


  • ---
  • Posts: 1404
  • Stan & Becky & Moe the Cat
Re: 5.9 Cummins
« Reply #1 on: June 01, 2013, 08:27:19 AM »
Just my 2¢, but I would try to stay away from a propane generator. However, that depends on how you plan to use the unit. If you are going to do any dry camping/boondocking, the propane will get expensive.

05 Beaver Monterey Laguna IV
400 HP C9 Cat
06 Honda CR-V toad with Blue Ox

Gary RV_Wizard

  • Forum Staff
  • ---
  • *
  • Posts: 64776
  • RVer Emeritus
Re: 5.9 Cummins
« Reply #2 on: June 01, 2013, 01:47:08 PM »
The rule of thumb is about 1 hp per 100 lbs of loaded weight. If you routinely pull the boat trailer, count that weight too. 1/100 won't give car like performance, but it will get the job done.

If you are concerned about performance, bigger is better, e.g. 1 hp for every 80 lbs
Gary Brinck
Summers: Black Mountain, NC
Home: Ocala National Forest, FL

G. Lee

  • Posts: 2
Re: 5.9 Cummins
« Reply #3 on: June 01, 2013, 02:07:03 PM »
  Thanks, I'll do the math on that.


  • ---
  • Posts: 968
  • "Nár lagaí na bithiúnaigh do lámh"
Re: 5.9 Cummins
« Reply #4 on: June 03, 2013, 05:40:14 PM »
FWIW I have a 5.9[in a 94 Dolphin 32D] that I believe is rated @190 HP and pull a 3500# CRV w/o even knowing it is there.
Before I added brakes to the toad I didn't realize how much better it helped in stopping the whole unit.
And as for power on hill climbing I admit on steep grades It will drop to 35mph. That's happened maybe a dozen times in 15,000 miles of ownership.
Would I like more power...yes...can I live with what I've got...yes.


94 Dolphin DP
99 CRV W/Blue Ox & Patriot Brakes
95 F-150 4X4 4.9
Fresno, Ohio most of the time


  • ---
  • Posts: 57
Re: 5.9 Cummins
« Reply #5 on: June 03, 2013, 10:20:56 PM »
I 've got a 96 Holiday Rambler fully loaded with toad and old car dolly I'm at 27,500lb. that's max. My 5.9 is rated 230hp 615ft lbs of torque.
If I get a good running start I have maintained 50mph in the smokey mountains going  through Tennessee, and Kentucky. It could use my horses, but they eat more hay.
« Last Edit: June 03, 2013, 10:33:03 PM by JFR »
Joe & Marie Roth
1996 Holiday Rambler Endeavor LE
2005 PT Cruiser Convertable GT HO(beach car)
You can have everything in life that you want if you will just help enough other people get what they want.
-- Zig Ziglar 1926-2012