Duramax Pistons

[JWhite]

May have been in a fleet truck, but good luck getting someone to believe the rest. Plenty of stock tuned trucks going half a million

 

[frankencummins]

I don't care to argue about it, it's my fleet so I know they aren't tuning the trucks. Same guy who drove the truck this motor came out of has 325k on his LMM powered fleet truck. They're definitely capable of going that far, this one didn't in factory form.

 

[fingers]

My comment was not made with fuel mileage in mind.
A mismatched cone angle/bowl design will hurt power.

What you don't know is that the ovals are no narrower than stock bowls across the narrow section and much wider across the long direction. By your thinking, they should be much better since more of the spray from the stock injectors is in the bowl.

Sorry for being late to the thread.