The 70 going through some changes

[fleming23]

I am sure the combination of valves (although I believe they are only 2.25" on the intake and I don't remember what you had on this thing) and a head that was seriously milled down to try to squeeze a solid 9.5:1+ didn't help matters. No big deal. They did say the bearings looked brand new when they pulled everything apart. Kind of a piece of mind to know everything has been checked out at this point. As a side note, I think they sent the pistons over to Greg to have him machine them so he is still working on this thing.