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MarkM Jun 2nd, 04, 1:22 PM Anyone know if there is an equation to figure out if a certain sized air cleaner is large enough to supply an engine with the necissary amount of air? Example; is a 14x3 filter (cotton guaze type) large enough to supply a 496 at 7000rpm? 427L88 Jun 2nd, 04, 1:37 PM No. Check the K&N site for a calculator. My 440 needs around 930 cfm at 7000. Aw, the darn equations won't cut/paste here... here's the link... http://www.knfilters.com/facts.htm#FACTS If we ASSUME peak HP at , say 6650, then you would need (496X6650)/ 20,839 = 158.28 sq in. When you plug 158 into the height equation for a 14" dia filter , you get, 4.366". You could probably use one of those fancy filter lids to get it right with a 3". MarkM Jun 2nd, 04, 3:30 PM Thanks! graemlins/thumbsup.gif I guess those "Engine Master" guys are loosing some hp having to run that 14x3 filter. Paddy Jun 2nd, 04, 9:14 PM Hey Mark, Going to Nostalgia at MAR this weekend? I'll be there but I don't know if I'll make the cruise or not. Gary | ||