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Old 02-02-2007, 05:04 PM
matt167 matt167 is online now
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you will loose vac with a tunnel ram, as there is more area to draw a - preassure in, therefor, in the bottom end, it may not run good, as it cannot suck the fuel in ( and coming from such a long distance does not help ). this is where the drivability issues come in, but also in the fact of the correct CFM carbs, Holley/ wieand will direct you to the Holley 450 CFM tunnel ram carbs, when that's 900 CFM, a healthy 350 might need 750 CFM if it's turning a few RPM's.
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