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collapsed lifters ?

This is a discussion on collapsed lifters ? within the General Help forums, part of the LSx Technical Help Section category; I of course have the LS1 tick. Which I assume is a collapsed lifter(s) It was loud at start up ...

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    collapsed lifters ?

    I of course have the LS1 tick. Which I assume is a collapsed lifter(s) It was loud at start up and quieted down after warm up but was still there. Iv pulled out the engine to rebuild it for other things, but how can you tell which lifter is collapsed and should I just replace all of them sence im rebuilding it anyway?

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    Senior Member bills98ta's Avatar
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    Usually, you can see the top is recessed in when collapsed. Definitely, upgrade to a stronger lifter while it's apart. I've had good luck with the Comp 850's !!!

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    Unbiased Opinion 67rsss's Avatar
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    If you have it apart, replace the lifters. In fact, if you have it out replace everything you don't want to have to do later...

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    79 T/A -91 Firebird
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    Very possible it could be a bent pushrod(not so much on the going away with heat. idk) or the common piston slap.

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    Thanks guys for the help... Im not sure I know exactly what "piston slap" means. I have a general idea, but could you tell me? thanks again.

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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Build specs on the engines werent too swell so the piston rocks in the bore when its cold. Metal expands and it seals everything up tight

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    Thanks for the explanation.

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    Member TOMASINO's Avatar
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    Quote Originally Posted by 2001TransAm View Post
    I of course have the LS1 tick. Which I assume is a collapsed lifter(s) It was loud at start up and quieted down after warm up but was still there. Iv pulled out the engine to rebuild it for other things, but how can you tell which lifter is collapsed and should I just replace all of them sence im rebuilding it anyway?

    u have to

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