HAHA i knew that would get your attention. BUT SERIOUSLY

 

what are you doing? what are those for?
sorry dude i have to say it REAL TRUCKS DON'T HAVE SPARK PLUGS!!!
lol
so is that a natural gas powered 5.9? What is it In?
I seen three of them as a back up generator that was natural gas at a hospital that was made by Cummins they pulled the old Detroit Diesels out and added these natural gas engines in their place
the reason they pulled the Diesel engines they didnt want the 1000 gallons of diesel fuel on the property anymore.

 

ya, its a NG engine, i was at the wrecking yard the other day (picking up a 1st gen engine for the old man's 75 chevy), i saw this thing and couldnt resist the thread...

 

not to many people know that Cummins makes gas engines also. I didn't know till i seen them witch was about 8 years ago atleast. But they are the same block. everything else is different so if you wanted or needed just the block you can use it but everything else set for natural gas they also make a gasoline engine too never seen one of those so i can't tell you what the block looks like or if its the same as the natural gas engine.