Well.. The Trick Flow heads came in at 287, and I thought that was low but McNews had 5 other TF engines in the dyno library and they made 10 more HP with much bigger cams so jumping from a PI cam to something bigger was worth some but.. I am disappointed in my nPI heads with 180cc ports, big valves, welded chambers CC'ed at 34-35, flat top pistons at -.004 deck, .036 gasket I agree HP is low compared to some of my compression checks I have listed. At a math answer coming in at 14.7 CR I should have pressures at 290psi. So I do not know, the dyno boys said this is the smoothest of my engines so far and I agree, I am happy with the chart I posted, smooth straight lines, I like the cam, sounds much nastier than it is, nice lope. So everyone join in here with thoughts, there is nothing wrong with this engine except the math doesn't match the dyno and I was hoping the HP would be closer to the TF heads for all the time and money I spent. The dyno boys had many TF dyno pulls and the 5 engines closest to mine were in the 295-310 HP range all with at least a Comp 260 cam.