[GirlyNFG]

I keep waiting for mine to break, but so far shes strong.

[Tmcbigblue]

Do you all think the stock pistons would be good for a 150 shot assuming the tune and everything is good?

[SGDM]

Originally Posted by jessrayo

Yes, Vengeance Racing felt that it would be better to keep the exact same piston dimensions and compression ratio to avoid the need for additional engine balancing.

If I put in new pistons I want less compression so I can throw more boost at it. I like the idea that someone at ADM is working on the cylinder heads to decrease the compression a little there. I'm still thinking that eventually a 417 stroker kit and the Lingenfelter modified fuel system is going to be required to really use the boost all of these FI systems can make.... in reality at least $10K more than we paid for FI.

I am the one that had the head work done to lower compression, after much discussion with ADM, it just made sense and came in at 10.4:1. GM spent over 100,000 hours developing the new piston for LT1 and confident this is a sound decision.

[SGDM]

Originally Posted by LibertyHill

Makes no sense. The problem only exists with boost and because of the high compression. Shouldn't take too much engineering to create a piston that still balances but with lower compression???

Didn't we use head spacers or thicker gaskets back in the day???

Are the LT1 and LT4 combustion chambers identical?

Haha, dang, have not heard that in a while...yep, we use spacers to lower compression.