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Factory Valve Spring Specs

This is a discussion on Factory Valve Spring Specs within the Internal Engine forums, part of the LSx Technical Help Section category; Does anyone know factory valve spring sizes (ID and OD), and installed heights in the '99 LS1's? I can find ...

  1. #1
    Dirty Harry hec33's Avatar
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    Exclamation Factory Valve Spring Specs

    Does anyone know factory valve spring sizes (ID and OD), and installed heights in the '99 LS1's? I can find everything but this anywhere on the interweb... Thanks in advance

  2. #2
    Dirty Harry hec33's Avatar
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    Nobody have any info?

  3. #3
    Junior Member
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    White Bird, Red Camaro
    91' Bird, 02' Camaro

    Bottom OD 1.214" ID 0.849"
    Top OD 1.020"-1.040" ID 0.648"-0.660"

    Typical stock installed height is 1.775" - 1.800"

    The last on I checked was from a 1998 LS1 head, it was 1.795"

  4. #4
    Dirty Harry hec33's Avatar
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    Thanks man, saved me a lot of time!

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