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L 92 Heads

This is a discussion on L 92 Heads within the Internal Engine forums, part of the LSx Technical Help Section category; i have run across a great deal on some l92 heads can anybody tell me the pros and cons of ...

  1. #1
    Junior Member
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    L 92 Heads

    i have run across a great deal on some l92 heads can anybody tell me the pros and cons of these heads they are cast aluminum?

  2. #2
    Member C&Cbird's Avatar
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    Well, number one, you have to have a 4" bore to be able to use the heads, which the stock ls1 motor does not have. You'd have to get a sleeved block or a 6.0 block to use the heads. They are great heads and can flow really well.

  3. #3
    Firebird Encyclopedia 9T8W66's Avatar
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    Yeah I'm with C&C on this,
    The heads are the new Square port design and also require an L76 or LS3 Intake manifold. And even if they did work they flow way too much air for a 346
    Craig
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    Member C&Cbird's Avatar
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    For a 408 stroker with a decent size cam, they are great, but like 9t8w66 said, they would be overkill for a 346 even if they did fit.

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    The Masterpiece Qwk94Z28's Avatar
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    1998 Z28-408 l92 stroker

    valves are to big for smaller then a 4in bore

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    Member C&Cbird's Avatar
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    I already said that

  7. #7
    The Masterpiece Qwk94Z28's Avatar
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    1998 Z28-408 l92 stroker

    Quote Originally Posted by C&Cbird View Post
    I already said that
    congrats

    heres a pic of one of my pistons the intake valves are huge

    these are going in my lq9 408

    if your on a budget 402/408 man these heads are the way to go, i got my heads brand new for 300 shipped

    only down side as of now is the l76 intake is a big restriction, you can't run a fast on it, but there is a fast in the works


  8. #8
    Senior Member qwkgto's Avatar
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    Quote Originally Posted by vytamenc View Post
    i have run across a great deal on some l92 heads can anybody tell me the pros and cons of these heads they are cast aluminum?
    i have a set of arf 205 mongooses cncd going to diffrent setup on my 408,im new here so i cant sell on this forum yet but i have some people on here that can vouch for me if needed..RC

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