View Single Post
  #3  
Old January 9th, 2014, 07:58 PM
Cayoterun's Avatar
Cayoterun Cayoterun is offline
Senior Member
 
Join Date: Jan 2013
Location: Guymon, Ok.
Truck: GMC V12 powered '46 Chevy pu
Age: 84
Posts: 167
Rep Power: 114
Cayoterun is on a distinguished road
Default Re: Durability opinions?

Quote:
Originally Posted by WDShaffer View Post
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).
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.
__________________
Cayoterun
Okla Panhandle

I think I'll fix it myself, and pay the extra $500.
Reply With Quote