Stopping the knock: Lower compression and ported heads...

CPMotorworks said
Agreed on straight up= same as LSA. Anything other is advanced/retarded.
Also agree that tighter quench is the proper route.
My point is this-
All the factors point to it should not have any problem running on 92 octane.
The cam may have been degreed, but nobody seems to be sure if its correct.
Cranking compression is higher that what it should be, indicating something isn't right, and possibly the camshaft is too far advanced.
The cam card clearly says installed at 106° ICL will be 2° advanced, with IVO @24.5 and [email protected] measured @ .050" lobe lift with it set there.

Telling a guy that advancing it up too 8° is a good idea is IMO a problem. Granted, we all want to help the guy but that's just bad advice for the OP.

Let me defend my friend here.

1st, Rob wasn't telling him to advance the cam eight degrees. He was saying that if a cam with 110 degree LSA was ground 4 degrees advanced and that if when installed at 106 that you considered that to be straight up and then you advanced that cam 4 degrees, you could possibily now have the cam eight degrees advanced.

Again, he wasn't saying do it, only that it could be that much advanced under those circumstances. Anyhow, that was my interpretation of his post.