Earlier combustion pushes back against piston coming up (counter productive) This is the reason why new engines combustion chambers burn faster than their ancestors. 302 head was an early example.
in theory my friend. If advancing the timing 'if needed' makes more power ... not a negative.
If what you're saying was so important we all have one degree of timing before top dead center so take that desperate argument for a 302 head and sell it to someone else.
