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LS7 Heads

This is a discussion on LS7 Heads within the GTO forums, part of the Vehicle Specific category; Shit...stick you some LS6 heads on that LS1 and get after em!...

  1. #21
    Grand Imperial Wizard Sarge's Avatar
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    Shit...stick you some LS6 heads on that LS1 and get after em!

  2. #22
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    Quote Originally Posted by Sarge View Post
    I would tend to not look at them as "cheap" but the aftermarket folks getting caught with the overpricing they have enjoyed with no competition from GM in the performance market.
    Looks like this is only going to work with the LS2/larger bore (4.125) motors.

    Hey Sarge...

    These are production truck heads so the volume alone keeps the price down. Get a set and install a better valvetrain in them and they will approach unported DART levels. Remember, it's not just the initial cost of the heads but the additional costs to upgrade them since the valvetain on the L92 heads aren't quite as good as most aftermarket heads....

    I'll be doing more testing on these heads as well as the new intake fthat matches them. Can't wait to see the new monster block the General is coming up with too. Supposed to be rugged enough for 2000+ HP!

    Ed

  3. #23
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    Quote Originally Posted by FTI-EDC View Post

    Hey Sarge...

    These are production truck heads so the volume alone keeps the price down. Get a set and install a better valvetrain in them and they will approach unported DART levels. Remember, it's not just the initial cost of the heads but the additional costs to upgrade them since the valvetain on the L92 heads aren't quite as good as most aftermarket heads....

    I'll be doing more testing on these heads as well as the new intake fthat matches them. Can't wait to see the new monster block the General is coming up with too. Supposed to be rugged enough for 2000+ HP!

    Ed
    Hey Ed...I was hoping you would chime in. I bet the aftermarket folks shit themselves.....look forward to hearing what you have to say...and by the way for those that do not know Ed. The man knows his stuff...when Ed talks I STFU and listen!

  4. #24
    txcosmos
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    That's about the only time....

  5. #25
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    Quote Originally Posted by FTI-EDC View Post

    Hey Sarge...

    These are production truck heads so the volume alone keeps the price down. Get a set and install a better valvetrain in them and they will approach unported DART levels. Remember, it's not just the initial cost of the heads but the additional costs to upgrade them since the valvetain on the L92 heads aren't quite as good as most aftermarket heads....

    I'll be doing more testing on these heads as well as the new intake fthat matches them. Can't wait to see the new monster block the General is coming up with too. Supposed to be rugged enough for 2000+ HP!

    Ed
    Do you know what the lift capability of the stock springs is that comes on these production complete ls7 style heads is. I want to run the magic stick 4 with them on my 6.0 liter but am assuming I would need better springs.

  6. #26
    Member jacobyb's Avatar
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    Wait. So the claim is 530whp with the heads, cam, and intake gear? That seems a bit...unbelievable?

  7. #27
    Member LS2GTO's Avatar
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    I'm getting conflicting answers regarding if LS7 heads will directly bolt on a stock block LS2 without having to bore the block. Still interesting hp numbers for the price of admission.

  8. #28
    Grand Imperial Wizard Sarge's Avatar
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    Quote Originally Posted by jacobyb View Post
    Wait. So the claim is 530whp with the heads, cam, and intake gear? That seems a bit...unbelievable?
    I should have the dyno sheet/pics from the fella making that claim....shortly...

  9. #29
    Member jacobyb's Avatar
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    Impulse Blue Matallic
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    I would not go as far as to call anyone a liar, but those numbers just seem so high. That is like almost 100whp gain.

  10. #30
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    LOL....not really....many documented cases of that type of gain with a heads/cam package on ls1's and 2's already...we shall see together...I'll post up when I get the stuff...

  11. #31
    Member jacobyb's Avatar
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    I can't wait. If this proves to be true, warranty be damned, I am going to do it. I will need more tire for sure.

  12. #32
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    Quote Originally Posted by LS2GTO View Post
    I'm getting conflicting answers regarding if LS7 heads will directly bolt on a stock block LS2 without having to bore the block. Still interesting hp numbers for the price of admission.
    The actual ls7 heads wont fit cause they have 2.20 valves, they only work with a 4.125 large sleeve bore. The L92 heads regarded in this post have smaller 2.16 valves and will for shur fit. They are ls7 styled heads that come factory on the 6.2 litre that has a 4.06 bore. The ls2 has a 4.000 bore and you cant really bore them out anyways, gm says you can only go like .010 over. You would have to resleeve to larger bores but that shoudn't be necesary as the l92 heads obviously fit on the 6.2.

  13. #33
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    Yup...I agree...we caught that earlier....but the L92 heads and the INtake/TB sure are looking like cheap RWHP! Thanks for the post....appreciate the insight....

  14. #34
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    Hello, I'm looking at all the responses to the dissapointment that the LS7 heads wont fit an LS1. I may sound stupid, but isn't the LS7 a 427 cu in motor? Is this 427 a small block or big block? I would think it's a big block, and with that being said, have big block heads ever fit a small block? Just asking.

  15. #35
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    Quote Originally Posted by Red Chevy View Post
    Hello, I'm looking at all the responses to the dissapointment that the LS7 heads wont fit an LS1. I may sound stupid, but isn't the LS7 a 427 cu in motor? Is this 427 a small block or big block? I would think it's a big block, and with that being said, have big block heads ever fit a small block? Just asking.
    I sounded stupid and proved the same. The LS7 is a small block, a muthafuck*n' 427 cubic in small block. GODDAMN!! Thats hot!! That makes you not want to make any mods to an LS1, and save all the money and get an LS7 out of a wrecked Vette' or buy a crate motor. Damn technology is forever changing for the better.

  16. #36
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    Nah...aint no such thing as stupid in this hobby...it is a constant learning process. And yes....I spent major bucks getting the 346cid LS1 to 600RWHP...hindsight tells me not to ever do that again....after it blew...and I got the 402 Stroker motor....I was kicking myself in the ass for modding that LS1 like I did...

  17. #37
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    ok any updates?

  18. #38
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    Sorta....they are the LQ9 heads and intake as reported above....MTI (?) in Houston did the build....I still havent gotten them to send us a dyno sheet....but I am working with another shop here in San Antonio that has just completed a 04 GTO...so hopefully I'll have before and after dyno pulls to "analyze"...

  19. #39
    txcosmos
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    Was it Burkes twin turbo I wonder?

    Ask for David over at MTI, he's cool, if he has time. The owner Jason won't have time...

  20. #40
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    Quote Originally Posted by txcosmos View Post
    Was it Burkes twin turbo I wonder?

    Ask for David over at MTI, he's cool, if he has time. The owner Jason won't have time...
    Well...Allen did say MTI ( If I remember).....I really dont know...I got my numbers from Nelson....

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