So I was initially aiming for 420-440rwhp with a hypergear SS2 on ported factory manifold, Poncams/gears. The guys doing the head recommended removing all quench areas and looking at the Det damage visible on them it made sense at the time. I spent probably 40 hours porting it myself but when I went to flow test they said I was too aggressive in some areas and not enough in others. So I bought another head and let them do it all. Never intended to go above 7200. It was more a learning project than going all out.
I asked them to remove quench areas and $1000 worth of porting. Bought poncams, new valves, springs, lifters and external VCT feed in case I got a 30 block down the track. I traded in standard stem seals and guides for a discount on custom ones they made for me. Oil drains enlarged.
So I guess I spent a bit over 5k on the head. When I said it’s never been 100% it’s because it’s had fuel dilution since initial tune. I’ve found multiple small issues which have improved the engine/response but the samples have never improved . I now have found compression on #3 changes regularly especially when cold. It has forged JE pistons/Hastings rings. I’m unsure if a ringland or ring got damaged on first tune, or something wasn’t set correctly? Leak down test was 9% all cylinders but maybe it seals better due to being stationary? I hope to remove pistons over winter and find something.
I’ll upload head photos after lunch