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408 stroker

This is a discussion on 408 stroker within the Internal Engine forums, part of the LSx Technical Help Section category; Can anyone explain to me what exactly makes a 408 stroker??...

  1. #1
    Junior Member DubisSix's Avatar
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    408 stroker

    Can anyone explain to me what exactly makes a 408 stroker??

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    Slow'er'Ass Mr. Luos's Avatar
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    LQ9 block bored .030" over....stroked to 4"

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    Junior Member DubisSix's Avatar
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    Quote Originally Posted by Mr. Luos View Post
    LQ9 block bored .030" over....stroked to 4"
    so its a completly different block??.. so its not like you can make an ls1 into it??

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    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by DubisSix View Post
    so its a completly different block??.. so its not like you can make an ls1 into it??
    You can, but you have to sleeve the LS1 block.

    Stock LQ9 = 364ci
    LQ9 block with 4" stroke = 402ci
    LQ9 block bored and stroked = 408ci

    Stock LS2 = 364ci
    LS2 block with 4" stroke = 402ci
    Shouldn't bore the LS2 block.

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    Puerto Rico LS1 Rikki_SeVeN's Avatar
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    what kinda power could range from that 408 combo?... and um... what's the weight diffrence between the Aluminum LS1 and the Iron LQ9?

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    Member C&Cbird's Avatar
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    The heads you use depend on what kind of power you can make and I've read that the iron block is anywhere from 75-100 lbs heavier. Mr. Luos has a pretty mean 408 that makes around 520-530 or so RWHP. You can make more than that, but its not easy to do without nitrous or FI on a car that you drive much on the streets.

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    Senior Member Bottesini's Avatar
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    How easily do hey both go into Fbodies ? I know the LS2 has a few different sensor locations compared to the LS1.

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    Wants to be Snowboarding FuhBreezeE's Avatar
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    Quote Originally Posted by C&Cbird View Post
    The heads you use depend on what kind of power you can make and I've read that the iron block is anywhere from 75-100 lbs heavier. Mr. Luos has a pretty mean 408 that makes around 520-530 or so RWHP. You can make more than that, but its not easy to do without nitrous or FI on a car that you drive much on the streets.
    Mr. Luos has a 402, 531rwhp.

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    Member C&Cbird's Avatar
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    Close enough, lol. They both go in fairly easily, just a wiring harness and something else for the LS2, the iron block needs nothing different.

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    Senior Member Bottesini's Avatar
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    Quote Originally Posted by C&Cbird View Post
    Close enough, lol. They both go in fairly easily, just a wiring harness and something else for the LS2, the iron block needs nothing different.
    Thanks for the info with almost 130k miles on the Camaro and turning over 6500 RPM at the track I think a stroker might be in my future sometime soon

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    Senior Member rajiv1998's Avatar
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    Quote Originally Posted by FuhBreezeE View Post
    Mr. Luos has a 402, 531rwhp.
    Its still slow...hence the nickname SLOWASS!!


    j/k

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    Junior Member DubisSix's Avatar
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    Quote Originally Posted by Mr. Luos View Post
    You can, but you have to sleeve the LS1 block.

    Stock LQ9 = 364ci
    LQ9 block with 4" stroke = 402ci
    LQ9 block bored and stroked = 408ci

    Stock LS2 = 364ci
    LS2 block with 4" stroke = 402ci
    Shouldn't bore the LS2 block.
    what would be better/cheaper, getting the LQ9 block or just sleeving the ls1?

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    Member C&Cbird's Avatar
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    Oh, the LQ9/6.0 block would be sooo much cheaper and better. You may not get quite as bit of a bore, but the extra bore isn't worth the price. The iron block can be found for 600 and below, the sleeved blocks are pretty pricey, I believe over 1500, maybe more, I'm not real sure.

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    Puerto Rico LS1 Rikki_SeVeN's Avatar
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    will the Stock stuff... fit on the Block?... I mean... Water Pump, Power Steering, A/C... etc etc... heads maybe (even if you don't really use the stockers)... heck even the wiring harness and such....


  15. #15
    Junior Member DubisSix's Avatar
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    Quote Originally Posted by Rikki_SeVeN View Post
    will the Stock stuff... fit on the Block?... I mean... Water Pump, Power Steering, A/C... etc etc... heads maybe (even if you don't really use the stockers)... heck even the wiring harness and such....

    ya im curious about that too.. can it just be like a direct swap?? kinda..

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    Member C&Cbird's Avatar
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    On the 6.0 block, I think there is one bolt hole missing for one of the accessories, but it can be drilled and tapped fairly easily. Everything else fits just like it does on the regular ls1 block.

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    Slow'er'Ass Mr. Luos's Avatar
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    For the alternator.

    I am using stock sensors and stock accessories.

  18. #18
    Junior Member DubisSix's Avatar
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    Quote Originally Posted by Mr. Luos View Post
    For the alternator.

    I am using stock sensors and stock accessories.
    Do you have the LQ9 block mr lous??

  19. #19
    Slow'er'Ass Mr. Luos's Avatar
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    Yes.

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    Puerto Rico LS1 Rikki_SeVeN's Avatar
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    so after a CF hood (for us steel hood guys)...and a Lighter Racing K-Member... to even out the Weight of the Iron Block Vs. the Aluminum one... it would actually be a pretty damn good deal to go with the LQ9...

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