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Open Roads Forum  >  Class A Motorhomes

 > Cat vs Cummins

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gswcgi

Wandering

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Posted: 07/25/11 05:17pm Link  |  Print  |  Notify Moderator

I have owned both, 3 Cummins and a Cat plus a MB. Between Cat & Cummins, not a dimes worth of difference between them, Both very reliable and if serviced on time by knowledgeable dealers they will outlast any RV you will ever own. I have a Cummins now in a Dodge 3/4 ton pickup and in 120,000 miles have only replaced a water pump at 100,000 miles. Now also have a CAT 3126e, 330HP, 860 ft. lbs of torque also bullet proof. Both companies have outstanding service from their dealers and you need to worry more about the coach and the floor plan etc. than the engine. Had two Cummins 903's in a commercial fishing boat that had 5,500 hours when I sold it and never did anything other than regular oil/filter changes and belts every year for 13 years. Those engines ran 24/7 from June 1 to Oct 1 every year. Hard to beat that kind of record! This is the Ford/Chevy argument every time, it's basically meaningless, IMO.


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ticat900

canada

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Posted: 07/25/11 06:09pm Link  |  Print  |  Notify Moderator

gswcgi wrote:

I have owned both, 3 Cummins and a Cat plus a MB. Between Cat & Cummins, not a dimes worth of difference between them, Both very reliable and if serviced on time by knowledgeable dealers they will outlast any RV you will ever own. I have a Cummins now in a Dodge 3/4 ton pickup and in 120,000 miles have only replaced a water pump at 100,000 miles. Now also have a CAT 3126e, 330HP, 860 ft. lbs of torque also bullet proof. Both companies have outstanding service from their dealers and you need to worry more about the coach and the floor plan etc. than the engine. Had two Cummins 903's in a commercial fishing boat that had 5,500 hours when I sold it and never did anything other than regular oil/filter changes and belts every year for 13 years. Those engines ran 24/7 from June 1 to Oct 1 every year. Hard to beat that kind of record! This is the Ford/Chevy argument every time, it's basically meaningless, IMO.

I think the Op asked about power between Cat and cummins not anything about reliability?? 350 Cat has less torque than the 8.3 350 cummins and way way way less torque than the 8.9 400/425 cummins

gswcgi

Wandering

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Posted: 07/25/11 07:07pm Link  |  Print  |  Notify Moderator

Get specific! Your incidental feelings aren't persuasive! I have had very little repairs out of warranty for either Cummins or Cat!!! My point is/was that either one is first class!!

Saftman

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Posted: 07/25/11 07:20pm Link  |  Print  |  Notify Moderator

Both are good reliable engines. The Cummins may get slightly better mpg.


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Executive

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Posted: 07/25/11 11:15pm Link  |  Print  |  Notify Moderator

Which is better...Ford or Chevy........Dennis


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powderman426

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Posted: 07/25/11 06:41pm Link  |  Print  |  Notify Moderator

gswcgi wrote:

I have owned both, 3 Cummins and a Cat plus a MB. Between Cat & Cummins, not a dimes worth of difference between them, Both very reliable and if serviced on time by knowledgeable dealers they will outlast any RV you will ever own. .


For reliability and how they run, you are correct.

I just went and looked up water pumps at the first site I saw that sold both. Cummins water pumps start at $112 and Caterpillar starts at $238. I'm not saying you can't find a better price, just giving a comparison. So just like I remember when I worked on Cats, Detroit Diesel and Cummins at the locomotive shop that the price of parts for the Cat is times 2 over the other makes. Its just something to consider.


Ron & Charlotte
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wolfe10

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Posted: 07/26/11 06:22am Link  |  Print  |  Notify Moderator

No "bad" engines in either family. Their displacement and therefore power stair step so power will differ.

Choose the coach that you want that has sufficient power for your needs. You will be happy with either Yellow or Red.


Brett Wolfe
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Posted: 07/26/11 06:41am Link  |  Print  |  Notify Moderator

I have run both and each always reported for duty with enthusiasm.


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Retiredblade

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Posted: 07/26/11 05:07am Link  |  Print  |  Notify Moderator

Executive wrote:

Which is better...Ford or Chevy........Dennis


Since you asked that, Chevy!





Jackha1949

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Posted: 07/26/11 05:46am Link  |  Print  |  Notify Moderator

I have an 05 Journey with the C7 350 hp CAT and it is a great engine. Lots of power for going up the steep grades. Ours has the smart wheel which is a great feature. As far as gas mileage we averaged 8.8 mpg going across country towing an 03 Subaru Forester and that was from Maine to Texas to Colorado and back to Maine. I think you'll be happy with either engine, now you have to really check out the coach itself. Good Luck and Happy Motorhoming!


Jack & Peg
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Sioux Falls, SD
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