Join Date: Apr 2008
Location: Beeville, TX
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The performance is asthmatic, the mileage is less than stellar, and the warranty is the same. I have used a number of 6.0l vans (ambulances) and they invariably are less driveable than the 7.3l versions. Ambulances are heavy and slow, but among ambulances, I have experience in both, and I would rather have the 7.3l.
The pickup truck version is much better in mileage. The reason is that with a higher horsepower engine, it doesn't have to work as hard to do the same job. You are only using a fraction of your throttle instead of having to use most of it to get the job done. It won't have to downshift to make hills. More horsepower is always better than less. That is why a tuned pickup truck will get better mileage than a non-tuned truck. Some of it has to do with efficiency of burn, but more of it has to do with the fact that the engine is not breaking a sweat doing it's job.
It's the same thing with gasoline engines. My friend has a small block chevy that is about 400hp. We've been messing with intakes, carbs, etc, and every time the horsepower goes up, the mileage goes up.
Eli Benson - EMT, Ambulance Mechanic
'08 F350 Dually KR - Spartan'd
'07 F250 CC SB 4x4 XLT - SCT /w Innovative Tunes
4 '09 & '10 E350 6.0l ambulances
1 '08 Duramax 6.6 (LMM) van ambulance