Knock all the time at hi RPM

[Stealth97]

How many miles on the Camaro?

I wonder if you can check the misfire data for each individual cylinder (1-8) and see if anything shows up. Could the coils be weak and somehow causing this? Could the cam have been changed without your knowledge and be degreed a bit off? Just thinking out loud.

[zrx1200]

Oh, also check for oil ingestion thru PCV plumbing (look inside intake manifold for oil pooling, and behind throttle blade).

oil will definetly cause it .not overfull?

[odd boy]

will do, he is reparing the trans.

[The Alchemist]

post a log please... timing at 6000rpm should be around 22 to 24 deg depending on octane. knock sensors usually always need a degree of 'tuning" at high rpm. THis can be done by tweaking the sensitivity settings at higher rpm to remove false knock. Post pic of your knock software sensitivity table B i think is the one...on the far right hand side in the 100kpa coluom thers numbers like 1.05, 1.08 or 1.10, 1.15 etc. These can be tweaked by 0.02 to 0.05 to remove false knock....

[NASABlue]

not to hijack,

would solid motor mounts on my 97 vette cause issues?

Thanks.

[odd boy]

I removed the heads, I found that the springs need to be replaced.

[Stealth97]

I removed the heads, I found that the springs need to be replaced.

Any broken springs? How many miles on the springs? Stock or aftermarket?

[joecar]

Were they broken...? Weakened...? If so, then what about the condition of cam/lifters/pushrods and did the valves kiss the pistons...?

[odd boy]

they were Weakened... the valves looked leaking. and the rest found K