This has nothing to do with cap walk-unless you exceed the timing required and get into pre-ignition and detonation. J.Rob
I have a buddy in the R+D biz that has the technology to data log cylinder pressure in real time and his research shows that detonation is happening long before you can hear it or see it in power data on a dyno when using commonly accepted total advance #'s. The pressure spikes started as you approached 30 deg and got progressively higher as the timing curve advanced to total.
I draw a similar conclusion based on the fact that there are guys on here that run boosted stock block combos at almost double the power levels that seem to beat the mains out of a stock block NA combo and the only thing I see different other than the boost is the timing curve. Mid 20's max. Little to no cap walk.
It is no accident that modern chambers like the Gen III Hemi or the LS are all done timing wise in the low 20's or less.
Kevin
We are saying pretty much the same thing. All you are saying is that total timing for max power is too much for longevity-in reality. I'm sure if we all had in cylinder pressure transducers we would find that we have been using too much timing all along. J.Rob
