Community Forums

johnnyweb · 06-09-2010, 05:49 PM

I am looking at purchasing a 1990 37' Monaco grand royal signature series M.H. I have a couple of questions if anyone can help me out. The engine is a Cummins LTA10, Anybody know horsepower and torque ratings? as well as pro's or con's to this motor? The transmission is Allison, 4spd I believe. Maybe someone has a similar coach know what kind of fuel milege to expect? Also interested in towing capacity of the coach as I would plan to tow my toys around with it any were for 3-10k depending on which toys it is. Any help would be appreciated. From what I know they are good coaches but maybe you guys know different? Thanks Johnny

DriVer · 06-09-2010, 07:57 PM

Quote:

Originally Posted by johnnyweb

Thanks ....

Johnny, A BIG iRV2.com welcome to you!

I am sure that someone will be able to respond to your question. Hang in there and it'll come to ya! You may also want to poke around in the Vintage Forum. Those folks know their "Heritage" RVs.

johnnyweb · 06-10-2010, 07:54 AM

Thanks, I will post this In general section as well.

fkloster · 06-10-2010, 08:11 AM

Quote:

Originally Posted by johnnyweb

I am looking at purchasing a 1990 37' Monaco grand royal signature series M.H. I have a couple of questions if anyone can help me out. The engine is a Cummins LTA10, Anybody know horsepower and torque ratings? as well as pro's or con's to this motor? The transmission is Allison, 4spd I believe. Maybe someone has a similar coach know what kind of fuel milege to expect? Also interested in towing capacity of the coach as I would plan to tow my toys around with it any were for 3-10k depending on which toys it is. Any help would be appreciated. From what I know they are good coaches but maybe you guys know different? Thanks Johnny

Johnny, your hitch has a 500lb tongue rating and 5,000lb tow rating.

johnnyweb · 06-10-2010, 08:24 AM

Wow, that's no much. I can always upgrade the hitch. I am more looking for towing capacity of the coach. It has to be more then 5k?

Gary RVRoamer · 06-10-2010, 08:44 AM

The L10 Cummins was the forerunner of todays ISL, so should be an 8.9L displacement. I think it came in 300 and 325 hp. I don't see any references to the 325 hp version before 1993, though.

I would not expect much mpg with the 4 speed, but have no practical experience to suggest a number.

Hopefully somebody here has one like it.