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Originally Posted by MAGAUSA
Pray - have you noticed any weak points yet? Seen a couple issues on this site that appeared to be within the valvetrain. Could be anomalies, but any thoughts are appreciated.
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I have heard that these cars have dropped valves but I have no proof of that. I didn't notice anything that jumped out at me. I will have to take apart the stock heads to see if I can spot any abnormal wear patterns or bent valves and what not. I will say that the car is much quieter and smoother now that I have swapped the heads.
When we were cutting the valves I did notice that some of them were "out of round" meaning, the back cuts showed low spots and high spots as we were cutting them. If I rotated those valves in the head while flowing them it would change the flow numbers.
One thing that did concern me is that both of my lifter trays on the drivers side were loose. I would walk them left and right to both extremes. I am sure it didn't hurt anything but the potential for binding of the lifters or at the very least extra friction and ware were present. I am also wondering if that could have caused a false knock scenario. I pulled the bolts on both sides and loc-tighted them back in place. We will see how that pans out.