Does this prove David Vizard's 128 lsa formula ?

360duster said

i read a book from DV, got convinced regarding the LSA theory. Had comp grind me a camshaft with 108°LSA instead of the common 110° - bingo, new best ET by quite a bit. All of the tests with somewhat "limited" cylinder heads show gains when reducing the LSA up to a certain point. One day i´ll try a 106°LSA cam (that´s what the formula shows for my next combination).

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I used to run the mopar performance 280 cam. It is a .474 lift with 110° lobe separation. I ran it dot to dot in a warm 360 in my dart sport with 3.55's and it scooted well. Also for intake I had the Edelbrock airgap. Fast-forward to 2022 I decided I wanted to try the 292 mopar cam with 108° lobe separation. So I changed out 280 cam for the 292 cam. This one I installed it @ 4° advanced on the Cloyes timing set. I also went ahead and changed my rear gear to 3.91's. Even further, I said what the heck let's switch from the airgap to the Victor 340 single plane intake. These changes alone gave my dart a wake up call. Not dramatic but enough to make it more fun to drive.