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Header tube length

This is a discussion on Header tube length within the Domestics and Foreigns forums, part of the Vehicle Specific category; Hey everybody, I am in the process of planning a LS1 swap , but that is a little ways off, ...

  1. #1
    Junior Member
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    Nothing LS1, YET

    Header tube length

    Hey everybody,
    I am in the process of planning a LS1 swap , but that is a little ways off, seeing as I am still deployed in Iraq. Anyhow, I would like to know how long the primaries are on full length headers for the LS1 to achieve proper scavaging. I might have to build my own headers so I want to get as close as I can to full length.
    Thanks in advance

    Phil

  2. #2
    Member Skippy's Avatar
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    Silver
    04 Pontiac GTO

    Man thats kind of a loaded question. Header primary length will chainge where your power comes in from the headers. This is why "proper" scavenging is a floating term. Header length for bolt on apps will vary in length up to a few inches. Most long tube headers are around 3' primaries. I hope this helps.
    Ashes to ashes and dust to dust, if it wasn't for fords our tools would rust

  3. #3
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    Nothing LS1, YET

    Thanks , I appreciate the help

  4. #4
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    88 Olds Ciera (LSX)

    If you know your cam specs here is a good calc.
    If for the street enter peak torque RPM if for race peak HP.
    http://www.wallaceracing.com/header_length.php

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