Max horsepower with EQ heads?

Coffee&Cars said

Maybe this will help, from Muscle Motors...... .257 x no. of cylinders x flow @ 28"
^^^^^^^^^^^^^^^^^^^^^
example-- .257 x 8 x 410 = 843 hp.

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Interesting! Never heard that formula before. Is it accurate ? According to it, my 440/505 street motor makes 723 . Happy w/ that. Car weighs 3278 w/ half tank of lawnmower gas (91) oct. , 3;73 gears, What will it run ? Anybody !!!!!!!!!!!!!!!!