Airpacker

Man,after eading this thred,I'm glad my new GMC crew cab is gas powered. I'll take the mileage penalty if it means it wont blow up at the worst time possible

26scarab

Hey H20 ,
I was on a website the other day looking at F650's and do you know what thier base engine is ? A Cummins.

boathead

Yes, that's why every Powersmoke guy I talk to say's "If it only had a Cummins in it".

Just because they're a so called "distant" player DOES NOT mean they don't make a superior product, ask anyone who has owned a Cummins/Dodge. Can you show me any million mile(w/o an overhaul) Powerchokes? I'll bet not, and why isn't Ford using Navistars in their medium duties, they all have C series Cummins 8.3's?????

26scarab

Boathead,
I have seen a broken 8.3 Cummins before. It was in a fleet bucket truck. The story I heard was that it had NEVER had the oil changed and it lasted 500,000.
I'll stick with my Cummins...no aluminum parts !!

bojoe2

i have a 03 psd 6.0 no issues no rough idle or loosing power i will keep knocking on wood and i took delivey in early apr. i had to wait for truck to be built 28 days from date of order to delivery date. once again no issues avg mpg 15.2

h2owarrior

I do not know if you guys totally understood what I said. Navistar made a change in their fuel injection strategy. They went away from a proven design in the Cat HEUI system. Navistar and Ford have some issues they need to work out......that they could have avoided if they would have stuck Cat...... The World Wide leader in diesel engine technology (and sales).

Yes I work for Cat and believe in their products. I also believe that Navistar and Ford made a big mistake....(and they know it).....that they will work out.

But, If you want to argue that the 5.9L Cummins could stand up to the 7.3L Navistar....have at it......you will only make yourselves look bad.

kyle55

Sorry h20, but the difference between the 5.9 ho and the 6.0 p.s are huge. The numbers (tourqe & h.p.) appear to be the same but you have to look close to see that the 6.0"s 555 ft. pounds of tq. does not come in untill 2400 rpm's. while the 5.9 H.O has its tq. by 1400 rpm's. An engine that makes its best tq. at 2400 rpm's is useless to me because I have a 21000 pound race car trailer and I think it would take two 6.0 p.s. to get it going. We also have a 99 7.3 p.s. with an 85 horse chip & 5" exhaust that pulls that trailer well, but there is no way a 6.0 would do it. I think the 6.0 p.s. should not be put in a c.c. dually but will probably do fine in excursions or f 250's where people will only attempt light hauling.

26scarab

H20,
My Cummins being the first diesel I've ever owned means I don't quite know a lot about them , but if they are so bad why do most of the big motor homes (pusher types) have a Cummins in them ?
Also don't most of the big rigs have either a striaght 6 or 8. If the v8 configuration is better then wouldn't they have them ? Just trying to learn more so I won't make the mistake that I did buying the Cummins

h2owarrior

I am not defending the 6.0L I did not compare the 6.0 to the 5.9L Cummins. I did not say the 5.9L was a bad engine.

I did say that Dodge with its 5.9L Cummins is a distant 3rd in the light duty diesel truck market and that Cummins is not the leader in any of the markets it serves. That does not make Cummins a bad company that builds bad engines.

A straight 6 is one of the best configurations to build an engine, period, gas or diesel. It has no primary order imbalance. The reason for the V8's in the smaller trucks is packaging. For instance the Cat 6.6 and 7.2L engines are too long to fit in a light truck.

I have never heard of a straight 8 diesel engine that would fit in anything smaller than a locomotive (Ford used to make a straight 8 gas engine).

Cummins has done well in the past with Motor Coaches, the market is small and the use is leisure, typically low miles on a yearly basis. But that is a discussion for another board