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Ls6/ls2 heads

This is a discussion on Ls6/ls2 heads within the Internal Engine forums, part of the LSx Technical Help Section category; okay so this might sound stupid. butwhat is the difference if any from the ls6and ls2 heads is one better ...

  1. #1
    Member El Toro Loco's Avatar
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    pewter
    2001 Trans AM WS6

    Ls6/ls2 heads

    okay so this might sound stupid. butwhat is the difference if any from the ls6and ls2 heads is one better than the other?

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    cutting and welding mark21742's Avatar
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    hugger orange
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    they are both 243 castings, but the ls6 has lighter sodium filled valves....other than that I think they are the same

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    King 0f n00bz shady milkman's Avatar
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    blacker than wesleysnipes
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    Quote Originally Posted by El Toro Loco View Post
    okay so this might sound stupid. butwhat is the difference if any from the ls6and ls2 heads is one better than the other?
    Quote Originally Posted by mark21742 View Post
    they are both 243 castings, but the ls6 has lighter sodium filled valves....other than that I think they are the same
    ^ along with those lighter valves they springs are different and the stem of the valve is longer on the light weight valves ....you a shorter pushrod should be used for a ls6 with a stock base diameter ls1 or 2 cam.

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    cutting and welding mark21742's Avatar
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    hugger orange
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    Quote Originally Posted by shady milkman View Post
    ^ along with those lighter valves they springs are different and the stem of the valve is longer on the light weight valves ....you a shorter pushrod should be used for a ls6 with a stock base diameter ls1 or 2 cam.
    I thought the springs were different, but wasn't sure

  5. #5
    Member El Toro Loco's Avatar
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    pewter
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    so i take it the ls6 heads are better

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    cutting and welding mark21742's Avatar
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    hugger orange
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    Quote Originally Posted by El Toro Loco View Post
    so i take it the ls6 heads are better
    if your going to up valves and springs beyond stock anyway, I'd just go for whichever head you can get cheaper.
    I'd never do a head swap and leave the stock springs in it, even with stock cam I'd upgrade to comp 918's

  7. #7
    Member El Toro Loco's Avatar
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    pewter
    2001 Trans AM WS6

    yea heard good things about those 918's and seems to be popular on here.

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    cutting and welding mark21742's Avatar
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    hugger orange
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    Quote Originally Posted by El Toro Loco View Post
    yea heard good things about those 918's and seems to be popular on here.
    several years ago there were a few bad batch of them that were prone to breakage, but they fixed the problem and all of tge bad ones should have been out of circulation for a long time now.
    they are cheap and very good. now they are rated upto .625" lift which covers probably 85-90% of the daily driven cams out there.
    I run them

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    Member El Toro Loco's Avatar
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    pewter
    2001 Trans AM WS6

    good info really appreciate it.

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