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STock Valve Springs

This is a discussion on STock Valve Springs within the Internal Engine forums, part of the LSx Technical Help Section category; Is it a must to change the valve springs when putting in a bigger cam then stock? Say around .580 ...

  1. #1
    Race cars have a clutch redss454's Avatar
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    STock Valve Springs

    Is it a must to change the valve springs when putting in a bigger cam then stock? Say around .580 lift?

    Also, is 110 a tight LSA on an LS1?

    Thanks,
    Chris

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    Pathelogical Liar BlackLT1Z28's Avatar
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    Yes, you def need new, stronger valve springs.

    And 110 is a really close LSA for an N/A motor. If your running a power adder, then it should be fine, depending on your application.

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    member since may 2000 nhraformula's Avatar
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    Race cars have a clutch redss454's Avatar
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    Thanks guys. As far as the LSA goes, what would teh charecteristics be? I would ASSuMe a pretty radical idle, but would it still be streetable, for a semi-daily car? I'm used to a 108 LSA in my BB Chevelle, so would it be much different then that cam's charecteristics?

    Chris

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    Pathelogical Liar BlackLT1Z28's Avatar
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    You might have vacuum troubles with a 110. Some people run an NA 110 LSA, but I don't remember if they needed a vacuum pump too.

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    Junior Member machineman-baltimore's Avatar
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    No doubt about it. Besides, you may also want to check the clearance between your retainer and valve guide/seal.

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    Race cars have a clutch redss454's Avatar
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    Thanks guys. I appreciate the help. I just have one more question, but it's in regards to the valve springs. How much lift can stock LS6 springs handle?

    Chris

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