The lions share of power originates from induction efficiency (heads, intake and valve motion curve).
454 with 8.2 compression. .050 duration 236 / 242 and a mismatched Hurricane single plane intake. All gain above 3200 RPM and made 567 HP. Obviously a dual-plane intake would have improved below 3200.
As you increase compression up the scale you get less return. Moving from 8:1 to 9:1 will yield more than 10:1 to 11:1
Last edited by pastry_chef; 07-25-2020 at 10:29 AM.
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