M818 question

[FreightTrain]

Does the M818 have an overdrive trans or is it a 1-1 final?What is the top speed stock?

 

[bulldog_mack13]

50mph , dont know the rest

 

[DaveP]

overdrive. I think they run about 52- 54 mph. I know i should know exactly as I have a few of them but thats pretty close.

 

[ARMYMAN30YearsPlus]

I will have a much better apprciation for the top speed next week after driving mine home 1,200 miles. Any guesses on how much fuel I will burn? Not an attempt to hijack the tread but I assume the OD question related to ecomomy of driving. I am going to try and keep it around 50 on the GPS and will have plenty of pictures since I am bringing my oldest son Christian along as a co-driver

 

[DaveP]

David, when mine was pure stock i would get 8 mpg if i was nice to it. that was at 2000 rpm's. just a click and a half below max rpm. and this was bobtail.

 

[oilcan]

The one I drove on tuesday ran 55 easily. Redline put it at around 57 mph, I think. It acted like it would do more, but it wasn't my truck... Not sure on the fuel mileage, as we didn't go very far.


It was bobtailed, also.

 

[DaveP]

The one I drove on tuesday ran 55 easily. Redline put it at around 57 mph, I think. It acted like it would do more, but it wasn't my truck... Not sure on the fuel mileage, as we didn't go very far.


It was bobtailed, also.

oilcan what do you consider redline? My cummins are 2150. allways been told any higher is when they are called cumapart.

 

[oilcan]

If I remember right, the sticker on the tach was at or around 2100 to 2200.

Also, I can't be sure the speedo was completely accurate. Just going by what the gauges were telling me. I've seen some pretty significant differences between tach and speedo readings on different trucks with the same drivelines/tires.

 

[TheBuggyman]

Mine runs 54-56 mph at 2100-2200 all day long. This is with 11.00-20 XL's.

Considerably slower uphill with a trailer...........

 

[Pappa-G]

From what I 've been told by some of the guys at CSMS and the owner of a local diesel reman shop the Cummins 855 will run all day long aginst the govenor but spin it any faster and you get BIG problems. Bent push rods, bent valves spun rods bearings hellfire brim stone basicly all the worst parts of the Bible.
The literature I've read says top speed of 54 mph.