Quote:
Originally Posted by WDShaffer
Absolutely the duty cycle is important. GMC took an onroad design and applied it to a stationary source. Running at a steady rpm with steady load removes the acceleration & deceleration stress of street driving. Having a fixed load (water pump) removes the variable of accelerating different loads, too. Finally, the operators were trained to maintain the pump engines; as opposed to junior trying to get dad's ole farm truck to beat his buddy at the stop lights (provably not a huge issue for the GMCs).
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That's been about the majority of conclusions most of the guys could come up with here.
I know it's amazing how long even a 292 Isix Chevy will run a small well compared to in a vehicle.
The guys that had Vblocks were really ticked when GMC discontinued them, in spite of the heavy natural gas consumption.