I think your both wrong.
Here’s whatcha do…get a 440, backside the chamfer with roller guides to around 370 timing port, elongate the header to 512, thermostatic bypass with flux running 280-285 boost, set the duration to 30 degs max opening, catalytic crossover within say 2.5 v dc output, muffler t-stat needs to open around 160 degs allowing the transaxle posi lockup around 7K rpm’s, when you get ready to make the jump to hyperdrive, give it a little clutch engagement to freewheel the manifold and cam duration to sync at the same time. Simple!
Are ya following me…make sense to you?