Dyno went great 663hp and 561ftlbs on az 91 pump gas.
Jdp knows thier stuff.
A week later I spun rod bearings 1 and 8, and damaged all the rest and cracked #8 cylinder sleeve. So far in tear down no reason why other than obvious oil starvation that shouldn't have happened (new melling high volume pump).
If I find no other cause then it's builder's fault (me). I'm the one who rebuilt the bottom end, so chances are I goofed something.
Working on budget for new forged short block.
Update 3-17-23: ordered short block from Texas speed forged bottom end with parts to support 1200hp (though oll never go up to that). Mains were fine so not an oil issue. I had to have messed up the rod bearings some how.
Dyno chart
