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doing pushrods...

This is a discussion on doing pushrods... within the Internal Engine forums, part of the LSx Technical Help Section category; Anything special i need to know? I know the obvious, remove coils, valve covers, rockers one by one.. When i ...

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    Yeah baby! Yeah! silverWS6's Avatar
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    doing pushrods...

    Anything special i need to know?

    I know the obvious, remove coils, valve covers, rockers one by one..

    When i put the rockers back is there a certain torque or just tighten em till their a little snug and dont dance around side to side?

    i did rebuild my little 305 but im not sure if it'll be the same process removing rockers on a ls1..

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    Veteran Hi-Po's Avatar
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    Quote Originally Posted by silverWS.6 View Post
    Anything special i need to know?

    I know the obvious, remove coils, valve covers, rockers one by one..

    When i put the rockers back is there a certain torque or just tighten em till their a little snug and dont dance around side to side?

    i did rebuild my little 305 but im not sure if it'll be the same process removing rockers on a ls1..
    Yea, its straight forward with stock rockers. Just tighten them to 32 FT lbs. Oil the push rods alittle maybe. Spin the motor over a few times and re-check the torque. Since your just doing pushrods, pull the fuel pump fuse and have the coil, obviously disconnected. Thats what I do. I just put it all together and hand tightened the valve covers for the motor turn. Very easy, quick job. Have fun!


    Edit - Sometimes German torque is ok.... but for rocker arms, I really hope you didnt mean... just snug them up! You need to torque them, and I do them in two stages just because thats how I do things. All to 16 Ft lbs, Then 32 ft lbs. Make sure you have a 8mm socket and a adpater if your using a 3/8 TQ wrench.
    Last edited by Hi-Po; 07-14-2009 at 05:20 PM.

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    Yeah baby! Yeah! silverWS6's Avatar
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    Sweet, thank hi-po! I was thinking about just sending you a pm

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    Im sorry, I mis spoke... its 22 ft lbs. Not 32 lbs.

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    Yeah baby! Yeah! silverWS6's Avatar
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    So should I torque em first to 11 and then 2nd pass to 22?

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    What are you putting in as replacements?

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    Quote Originally Posted by Hi-Po View Post
    Im sorry, I mis spoke... its 22 ft lbs. Not 32 lbs.
    Good thing you caught it

    I was going to say 22 ft lbs.
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    Quote Originally Posted by 9T8W66 View Post
    Good thing you caught it

    I was going to say 22 ft lbs.
    Yea, After I wrote that I actually thought it was 31... for some reason. It made me look it up

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    Quote Originally Posted by Mr. Luos View Post
    What are you putting in as replacements?

    Not sure yet, I'm waiting on somebody to get back at me on some. Can't stop checking my pm's they are new though.
    But if he doesn't, I was thinking compcams.

    Any you recommend?

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    Quote Originally Posted by silverWS.6 View Post
    Not sure yet, I'm waiting on somebody to get back at me on some. Can't stop checking my pm's they are new though.
    But if he doesn't, I was thinking compcams.

    Any you recommend?
    COMP cams. They will run good. Pretty cheap also.

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    Quote Originally Posted by silverWS.6 View Post
    Any you recommend?
    Stockers.

    Unless you have upgraded valvetrain components.

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    Quote Originally Posted by Mr. Luos View Post
    Stockers.

    Unless you have upgraded valvetrain components.
    Aren't stockers notorious for bending though? Might as well do harder ones but stock size right?

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    Quote Originally Posted by silverWS.6 View Post
    Aren't stockers notorious for bending though? Might as well do harder ones but stock size right?
    Those same stockers shouldn't bend unless they are used in an application where they are mechanically over-revved.

    Using the hardened pushrods with the stock valvetrain.....is asking for disaster in case of said over-rev.
    Will disaster happen with hardened pushrods??? Probably not. But since you have the stock cam and stock valvesprings, replace the 1-2 bent stockers with stockers....until you need hardened pushrods.
    Always nice to have a safety valve....
    Plus, it is $8-16 and some labor instead of $110 plus shipping.



    Running hardened pushrods with the stock valvetrain.....will create contact between the piston and a valve when over-revved.
    Granted, this can happen with aftermarket valvetrain as well.

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    Quote Originally Posted by Mr. Luos View Post
    Those same stockers shouldn't bend unless they are used in an application where they are mechanically over-revved.

    Using the hardened pushrods with the stock valvetrain.....is asking for disaster in case of said over-rev.



    Running hardened pushrods with the stock valvetrain.....will create contact between the piston and a valve when over-revved.
    Granted, this can happen with aftermarket valvetrain as well.
    something has to give during ptv ...better to be the pushrods

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    hardened ones will not give..meaning something else has too

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    Ahh man.. I guess ill save my hardened pushrods till I get my cam and upgraded valvetrain ops:

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