Lots of Knock, is it real??

[maudyZ28]

Hi guys,

Well got an idle pinned down, WB still says rich, but back in closed loop fuel triming does its thing and idle is fine in N, it does also blip up before going in gear and hold nice idle in gear too.

Anyways, set the fueling to about 12.6 to be on safe side, ramps down from 13.5 at 2000 to 12.9 at 4000 then to 12.6 after that. Doing a few WOT plus with Z06 timing table (low at wot as it is 22 deg) as a baseline, then I intend to change from here.
Problem is i'm getting knock all over, not saw tooth but just jumps of knock here and there. Thing is once it has done it do sensors get more sensative as it random knocks more and more then, either when i change gear/ driveline clunks?, randomly, exhaust banging?? or could it be eating Oil throguh bad PCV? Could it be my coolant lines under LS6 intake (ls1 to ls6 conversion that are banging the block??)

I've got a oil catch can and renewing PCV than is inline too. But any idea what the other knock could be. I've dropped timing to 17 at 4000+ and it STILL pulls timing.
I'm not happy as car feels no faster and is possible slower over the md range than when I didn't have 253 heads and cam (LS1 camaro, 253 ls2 heads, 228R cam).

I also have high octane spark table in low octane table the same? and it still pulls timing ???

BTW plugs are TR5 gapped at 0.04" and all looks good, no fouling etc and leads ok, all cylinders fire (could I do plug out test on head to check spark strength?)