I was also running carrillo rods making about 1300 hp 3550 lbs 8.40s @164 with a Innovative 88. When I put on Harrys 91.5 at 26 lbs of boost it ran 8.57 when I took it to 31 it had enough and vented the block. I would agree with Dale 1250-1300 hp is about max I will tell you that carrillo will tell you differently they told me 300 hp a hole. I think we can answer that question for them They are good rods but they have their place. For whats its worth we put Olivers for this go around.