Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - To drill or not to drill steam hole in 400
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Old 06-26-2008, 09:11 PM
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j.d.brown.042964 j.d.brown.042964 is offline
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Unless you're gonna do ONLY dragracing w/ engine rpm's primarily over 3000 rpm, all the tech. sources I've ever heard from say to do 'em. My last builder chose not to do them, but I had them added because it's cheap insurance for a "street-driven" setup that will spend alot of time under 3000 rpm. I checked with my head supplier,and because I live close by their Main office-they said bring 'em in and we'll drill them for free, which they did! I agree with what the head designers/supplier say.
Remember of course to choose headgaskets that have the steamholes, as some do not. Fel pro 1014 and 8634 do have them, 1004 and 1034 do not. -Jim.
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