I'm thinking about installing valve springs, on my Sky Hawk 289, which will allow me to achieve 5,000-5,500. Will my Stock WCFB 2219 allow this sort of RPM, or will it have reached its airflow limit before this? Will R1/R2 springs get me to this RPM? I'm not going to "drive" at this RPM, but when necessary
, I'd like to be able to shift at it. Will the Stock cam/valves allow this sort of RPM?..

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