500 vs 512 from 400ci

ValiantS said

Respectfully, you cannot use long-term and stock block 1100HP in the same context. I like a longer rod because it stresses the bore walls less. If you gusset-up and make the main area better, may as well reinforce the cylinder walls AT THE SAME TIME. Sonic check and either filling or sleeving anything questionable. Set the bore to where you can get GOOD THIN rings.

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I was thinking about half fill with hardblock. Works well with my current 470. No cooling problems at all.
I actually have 6.760 set of Molnar rods with l19 bolts sitting in chevy sizes so using longer rod actually saves me few hundred $.
Perhaps I can get custom piston that will make things more stable.
I also am using vacuum pump now so wanted to get low tension rings in this build.