Engines with lack bottom end power?
And you just made my answer for me. It’s a combo of the smaller cam and dual plane.
I told you that you been told and the answer was already given before and yet…. You counter otherwise but yet find the above reply you left behind…. As the answer to the issue.
The info is in your head! You have seen it here before and read the magazine articles detailing this issue. It amazed me you asked but….. that’s better than not asking.