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  1. Dookie

    Intake Runner Taper

    Hi all, I have a question regarding intake manifold runner taper. I have read somewhere, don't remember where, that adding a taper to an intake runner has the effect of shortening the runner. The example I remember seeing said something to the effect of: a 2* taper on a 14 inch long intake...
  2. Dookie

    Intake Plenum Volume

    Hi all, I am trying to find design information on single plane style V8 manifolds. Specifically, the effect of plenum volume when runner length stays constant on a port injected application. Does increased volume raise the RPM point of VE? What is the relationship of runner volume as compared to...
  3. Dookie

    4-Valve camshaft selection

    Sean, Thanks for the reply Sean, you have given me a couple things to think about. Looking forward to your response. Anyone else want to chime in? Regards DOOKIE
  4. Dookie

    4-Valve camshaft selection

    Sean, Thanks for your reply. Sorry I made a mistake on the stroke. It is actually 4.170. Rod length center to center is 6.657. Flow figures are as follows: .20 190 CFM .30 255 CFM .40 275 CFM .50 300 CFM .60 307 CFM Cam stats are at .050 I'm starting to think I need more cam. What do you...
  5. Dookie

    4-Valve camshaft selection

    I am in the process of casting a port fuel injected single plane intake for Ford's 5.4L 4-valve V8. I am trying to determine the correct lift & duration cams to use for this application. If anyone can have a look at my engine specs and provide some assistance it would be greatly appreciated...
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