It’s not the end all. Keep poking around the engine elsewhere. Initial, total and timing of the ignition curve, converter, gears and tires. It’s all in the combination. Keep hammering away at it.
@Dale Davies I don’t know why a cam company would have a problem grinding a cam to your spec. Though I agree they would think you’re crazy for wording your own stuff, a thing I have ran into before…. Sigh…… but insist on it and you’ll get it.