Max horsepower with EQ heads?

ou812 said

Something seems wrong here...I made 560HP with my W2's over 13 years ago with a 360, 12.25:1, solid FT cam, victor 340, TTI 1 7/8 headers...by chance are you running a small header tube? Just curious, as you should be at 600HP unless your using a 700cfm carb.

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I believe you are right. I was there the day my dad was testing a crank scraper on his 357ci/340. Compression should have been around 12:1, W2's (unknown flow rates), don't remember who's W2 intake, solid flat tappet, Murry Jensen modified 4150 ..........610HP.........and that was in 1977 I believe. It was along time ago to remember the exact year, but no later than 1980.