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What is the difference between the lsx motors?

This is a discussion on What is the difference between the lsx motors? within the General Help forums, part of the LSx Technical Help Section category; Can someone explain the differance in detail what exactly each ls motor is. ex. LS1= 346c.i around 350hp 6bolt main, ...

  1. #1
    Member Ryanater's Avatar
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    1998 WS6, 1969 Camaro

    What is the difference between the lsx motors?

    Can someone explain the differance in detail what exactly each ls motor is.

    ex. LS1= 346c.i around 350hp 6bolt main, aluminum block/heads. 10.0/1 compression...

    And what is the differance between the ls6 and the ls2? They are both 6.0L and they both produce 400hp.

    Are heads, cam, intake.... all interchangable between the lsx motors? Like with old small block chevys you can put 327 heads on a 350.

    Thanks.

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    i believe the ls6 is the same size as an ls1 with more horsepower coming from heads and cam. these parts are usually all interchangable. don't know which ones are and arnt for the ls2

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    Firebird Encyclopedia 9T8W66's Avatar
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    LS1 - 5.7 - 350HP
    LS6 - 5.7 - 405HP (01 only 385HP)
    LS2 - 6.0 - 400HP
    LS3 - 6.2 - 430HP
    L76 - 6.0 - 367HP (87 octane)
    LS7 - 7.0 - 505HP

    Most parts are interchangeable but LS3, L76 and LS7 have different head and intake designs that will not swap to the older 5.7 engines.
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    Member Ryanater's Avatar
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    1998 WS6, 1969 Camaro

    Quote Originally Posted by 2000T/A Guru View Post
    LS9 6.3 liter supercharged 650hp
    So the ls1 and the ls6 are both 5.7l? Do they have the same block?

    Is the bottom end of the two engines identical?

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    Senior Member Redphoenix1998's Avatar
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    bottom end of an LS6 is different. The block itself for the LS6 had better bay to bay breathing in the crank case. I have a stock LS1 and an LS6, tore both down to shortblock form and you can tell which one is better.

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    Quote Originally Posted by Ryanater View Post
    So the ls1 and the ls6 are both 5.7l? Do they have the same block?

    Is the bottom end of the two engines identical?
    Some of the '02 LS1 f-bods came w/ LS6 blocks.

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    Member Ryanater's Avatar
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    1998 WS6, 1969 Camaro

    Quote Originally Posted by 9T8W66 View Post
    Search is your friend

    LS1 - 5.7 - 350HP
    LS6 - 5.7 - 405HP (01 only 385HP)
    LS2 - 6.0 - 400HP
    LS3 - 6.2 - 430HP
    L76 - 6.0 - 367HP (87 octane)
    LS7 - 7.0 - 505HP

    Most parts are interchangeable but LS3, L76 and LS7 have different head and intake designs that will not swap to the older 5.7 engines.
    What did ls3 come in? And what about the l76? Is that the truck motor?

  9. #9
    Firebird Encyclopedia 9T8W66's Avatar
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    Quote Originally Posted by Ryanater View Post
    What did ls3 come in? And what about the l76? Is that the truck motor?
    The LS3 is the standard engine for the `08 Corvette
    and the L76 is the base V8 for the Pontiac G8.
    They both may be available in diferent models of the New Camaro aswell.

  10. #10
    Senior Member slims00ls1z28's Avatar
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    LS engine info There's not as much info on the cams etc but more of the basics of what you asked are there.

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    Always heard that LS1 block was a little stronger than LS6. Not sure why?

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    L76 for 2007 is also VVT rated right under 370hp and at 380tq. AKA-new vortec max

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