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identifying heads?

This is a discussion on identifying heads? within the Internal Engine forums, part of the LSx Technical Help Section category; Originally Posted by shady milkman yes i would still go 243s okie dokie at least i feel better about hunting ...

  1. #21
    Senior Member kool-aide's Avatar
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    Quote Originally Posted by shady milkman View Post
    yes i would still go 243s
    okie dokie

    at least i feel better about hunting for something nice. I have no idea if i will find anything i can afford, but i can try.

    at least knowing I can focus on the casting number makes it easy to ignore the BS someone puts in their auction, .

    I will keep my eye on the 243s and the 799s. I am still assuming the 799s were identical to the 243s.

  2. #22
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    SOM
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    except the z06 243's had lighter valves....

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    Senior Member kool-aide's Avatar
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    ah yes right. i do recall reading that about, thanks.

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    King 0f n00bz shady milkman's Avatar
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    Quote Originally Posted by SOMbitch View Post
    except the z06 243's had lighter valves....
    and longer.

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    Quote Originally Posted by shady milkman View Post
    and longer.
    makes sense. I thought I read somewhere the LS6 cam base circle was smaller. I guess they used longer valves vs. longer push rods?

  6. #26
    King 0f n00bz shady milkman's Avatar
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    Quote Originally Posted by kool-aide View Post
    makes sense. I thought I read somewhere the LS6 cam base circle was smaller. I guess they used longer valves vs. longer push rods?
    yup...longer valves to offset the smaller cam circle and keep pushrods the same.

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    Senior Member kool-aide's Avatar
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    Quote Originally Posted by shady milkman View Post
    yup...longer valves to offset the smaller cam circle and keep pushrods the same.
    did all 243 and 799 castings come with longer valves or was that something just for the LS6?

  8. #28
    King 0f n00bz shady milkman's Avatar
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    Quote Originally Posted by kool-aide View Post
    did all 243 and 799 castings come with longer valves or was that something just for the LS6?
    just ls6.

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    THe 243's and 799's have smaller chambers for more compression also. Dean

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    Quote Originally Posted by shady milkman View Post
    just ls6.
    Hmmm, any way to tell if a set of 243s were on anything but an LS6?

  11. #31
    Senior Member kool-aide's Avatar
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    Quote Originally Posted by deanj View Post
    THe 243's and 799's have smaller chambers for more compression also. Dean
    Ah yes, thank you.

  12. #32
    King 0f n00bz shady milkman's Avatar
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    Quote Originally Posted by kool-aide View Post
    Hmmm, any way to tell if a set of 243s were on anything but an LS6?
    this i dont know for certain...i know the ls6s 243s had yellow springs.

  13. #33
    Senior Member kool-aide's Avatar
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    Quote Originally Posted by shady milkman View Post
    this i dont know for certain...i know the ls6s 243s had yellow springs.
    figured that might be a hard one to tell. I have seen a few auctions for 243s that didn't have yellow springs. That's why I posted the thread for helping figuring out how to accurately identify heads. No way would I go by the word of an auctioneer.

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    midnight blue
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    I am looking at the ls6 2.5 heads and tourquer v2 with a 112 lsa, and the ported ls6 oil pump, I am only have problems with trying to figure out what size push rods to go with can anybody help!!!! the choices are as follows
    7.400
    7.350
    7.375
    7.425

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    Quote Originally Posted by bluehawk2000 View Post
    I am looking at the ls6 2.5 heads and tourquer v2 with a 112 lsa, and the ported ls6 oil pump, I am only have problems with trying to figure out what size push rods to go with can anybody help!!!! the choices are as follows
    7.400
    7.350
    7.375
    7.425
    Will be so much easier to buy a pushrod length checker. That will take the guess work out of the situation.

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    Senior Member bluehawk2000's Avatar
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    midnight blue
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    Quote Originally Posted by Hi-Po View Post
    Will be so much easier to buy a pushrod length checker. That will take the guess work out of the situation.
    Well I will be taking it to a shop to have this all done since I do not have the proper equipment and place to do this. And I was wanting to have the stuff for when I get home from iraq, basically all I am going to do is add the cam heads 92/92 intake and tb is the only thing i will do to the motor.

  17. #37
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    Quote Originally Posted by Hi-Po View Post
    Will be so much easier to buy a pushrod length checker. That will take the guess work out of the situation.
    this seems like a dumb question. I have seen the push rod checkers for sale. Do you have to rotate the crank to get each piston at top dead center? I have no clue how you would use the push rod checker. I am just guessing there is more to it than shoving it down each hole. I'm guessing you need the CAM or something in the right position to check? I have no idea, lol...

    For the other guy asking the length question. Shouldn't the place selling him the CAM be able to recommend the right length? Or maybe could he call the maker of the CAM? Maybe this would help him out in his case.

  18. #38
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    Quote Originally Posted by kool-aide View Post
    this seems like a dumb question. I have seen the push rod checkers for sale. Do you have to rotate the crank to get each piston at top dead center? I have no clue how you would use the push rod checker. I am just guessing there is more to it than shoving it down each hole. I'm guessing you need the CAM or something in the right position to check? I have no idea, lol...

    For the other guy asking the length question. Shouldn't the place selling him the CAM be able to recommend the right length? Or maybe could he call the maker of the CAM? Maybe this would help him out in his case.
    I posted some information on measuring in this thread. Under, Pushrods.

    Horsepower, Reading, Research, Options

    Yes, if the cam manufacturer has ALL your information, they should be able to get you the right length. Still should measure your own, as its a critical component.

  19. #39
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    thank you. i can't wait to hop over and read it.

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