Extra hp out of my 340.

None of what I posted was direct at you... If you took it that way, sorry about that. Hate that article because it provides false expectations to the many out there that take it as gospel.

Headers are good in most cases along with a good intake, no doubt about it. No kidding dynos are tuning tools. Plenty of sunshine pumping dynos out there. I showed a friend how to change correction factors with humidifier!

The deltas are OK. The numbers after cam change, not so much! Build that engine and run it at the track, won't be close to the claimed hp... :) It's BS any way you cut it and proved at the track many times where the REAL numbers get revealed!