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4-2-1 vs 4-1 headers?

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  • 4-2-1 vs 4-1 headers?

    I'm a newbie in this area. I've just stumbled on a company here in the Philippines that does mandrel-bent headers, so suddenly I have a nice alternative to importing.
    Googling so far reveals that 4-1 is for horse power at the top end, 4-2-1 is for a more even spread of power across the range.
    My only question at the moment is how does that work? (Maybe I don't understand the function of collectors either, 'cos I've also read that the length of collectors can affect power at different RPM.)
    I'd be happy with some links for further reading, or a potted explanation right here at M&M. Plus any other comments on 4-1 vs 4-2-1.
    Thanks as always,
    Simon
    Simon Ward
    67 FB, 68 FB, 71 Mach, 72 Mach x 2, 72 Grande, 68 Cougar x 2 (1 XR7), 72 Torino, and yes ... 68 Camaro!

  • #2
    http://www.flowmastermufflers.com/pr...&cPath=137_4_5
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    Alex Denysenko
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