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Very rarely are Fords (or any custom engine for that matter) optimal with shelf cams.
For the price of a custom, it's always a win/win. I've made 28 more peak hp and 10 more average hp by using my own grinds over shelf stuff.
That Howards cam is a typical "Chevy" grind.....6° duration split, with a 110 LSA, ground 4° advanced.
It's on the large side for a 408 as well, unless the cylinder heads are choked way down.
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