Let’s for now leave peak hp and the needed air flow for that out of the picture for now.
If the OP is talking about off idle sluggish throttle response below 3500 to 4000 rpm with that still kinda small cam then my guess is that the cam is in retarted and or the vacuum advance and or dizzy timing is not right yet.
The motors cranking compression really needs to be checked to truly start the process of eliminating what the root problem is.
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I do stuff for reasons.
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