Pat McCarthy, Jerry Clayton and others know more about the BBC than I do, but maybe I can set a foundation to work from.....
A 4.310" bore, 4.000" stroke 454 with a zero deck, KB203-060 pistons having a 12cc dome, 4.380" x 0.041" head gasket and 115cc chambers will result in a 9.45:1 static compression ratio.

I would not use a flat tappet cam in anything these days, and especially not in a BBC. Howards has the best price on retro-fit hydraulic rollers for the street. I might use a Howards CL120245-10
278/284, 225/231
106 IC/114 EC/110 LSA
Operating range 1800-5400
Noticeable idle, street performance
Needs 2000+ stall converter

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