Home Page 6.7 Add Questions

[Greenleaf]

The home page is a large add for the 6. 7 and have some questions.



Life to overhaul is only 350,000? At 230,000 I nearly have that on my personal 5. 9 and Isuzu advertise something like 400/450 k I believe.



The larger 6. 7 is advertised at increased HP and torque. Over what, the old 5. 9? If there *is* any increse, I don't know they should talk it up like it's another 50HP and 50 lbs ft.



GM is offering 460HP ... ... ... ... ... . and same or MORE torque at a low rpm too. Peak torque is advertised somewhere near 1800 rpm for the Isuzu, right?



Ford adds I read are also much higher than 300-some HP.



I don't understand how the Home-page Cummins write-up can say they "... ... ... leapfrogg the competition"..... when it clearly doesn't.



I'd be interested in buying some (engines alone) to power new school Bluebird buses. However, the torque of the Cummins is quite a bit lower than the Cat C7 engines I now use. The buses utalize torque, not hp alone. HP alone will not impress me when powering a school bus. The new engines are not advertised as much improvemnet outside they meet 2010 emissions.

 

[dpuckett]

Meeting the 2010 emissions is a big selling point for the greenies out there.



My impression is that DC has dropped the ball, AGAIN. Had they come out with the 4500/ 5500 about 10 years ago, pumped the power and torque up, people would have paid for the added driveline to handle it, and Ford would be losing more money than they already are. ANd now they (DC) wont offer the Mega Cab for the 45/5500 trucks. Have they not SEEN all the cre cab duallies pulling 6-8 horse trailers with a 12-18ft SW living quarter? It's bad enough you have to get 1st gen fenders on a new truck if you want a MC dually. And what's up with the ultra low gearing? Part of the advantage of the Cummins is low cruise RPMs. At least in the 1st gens I've had, 4. 10s are a total waste of time and MPGs, much less 4. 44s and 4. 88s. But it will keep USGear and GearVendors going a while longer.



350Kmi is an ultra conservative estimate for those who go 10-20K between changes with Fram filters. You put a 5-800K life to overhaul, and people wont buy it because they think you are lying to them. "500K pickups are few and far between. " I have 2 in the driveway (ok, one is Mom's), and I know one has factory cross hatches in the cylinders.



Daniel

 

[Greenleaf]

What is the power and torque specs on the 3005/6 model year 5. 9???



Is it not 310hp and 600 lbs ft at 1600 rpm's or very very similar to my guess?



The average American is thinking... ... "360 HP from an engine with more cylinders is sure to beat the socks off a lower power inline 6"



I think they better work on the engine specs a bit before they claim to "leapfrog" the competition.



I'd like to order a new bus with the 6. 7 to see how it holds up to the C7 Cat engines now in use. I'll be ordering in April.

 

[Philip]

Daniel look at the GVW those two trucks are rated for. These trucks are going to be heavier than our 1 tons. You will need the lower gears. The bad news if you get a 5500. That is a class 5 truck. Your buying it with a class 3 engine. There will be some people that are going to be disapointed if they run a 5500 up to its rated capicity. It is going to be slow getting to speed and it most likely will start slowing down when a hill comes into sight.



I have driven a F650 with a 5. 9 in it with heavy loads. It was very disappoining even in the flat lands of central IN. Try 1 mile to get to the speed limit. The engine was turned up also. It was a 2000 model with a VP44 24 valve.



If your going to buy a class 5 truck. Get one with a class 5 engine. At least a 8. 3 or bigger.



I hate to think how much Kelderman is going to make off air ride rears for these new trucks. A class 5 almost empty is going to pound you hard. A F650 with 20k+ on a trailer will make you cry seeing a railroad track crossing.