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This is a discussion on first mod ordered for Z06 within the Comparison: WRX vs World forums, part of the Community - Meet other Enthusiasts category; Originally Posted by BrianH I still see FI as having a higher ceiling than NA. . . Though with the ...

  1. #16
    Resident meany-rator 06wrx4me's Avatar
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    Quote Originally Posted by BrianH View Post
    I still see FI as having a higher ceiling than NA. . . Though with the LS3's people are cutting 9's with bolt on sc's. .. still not the route I want to go.

    intake, headers, cam, double roller,pushrods, rockers, thermostat, dual springs

    Your list for 500sh would be the same but with heads, no? . . that doesn't seem like it would be much more expensive than a used sc, depending on your choice of heads. . . though with labor I can see it spiking.
    I thought the LS6 heads were pretty good out of the box. I know the GM Ls6 conversion kit for the ls1, had the ls6 factory heads and the gm "hot cam".
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  3. #17
    UnBanned Sinister's Avatar
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    With N/A you'd still have to look at internals (not just heads) depending on if you're wanting a high compression engine or not... and cams alone can cost a pretty penny...

    I agree that F/I is much more streetable though. And fiscally, a s/c would probably make the most sense.
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  4. #18
    Boba Fett BrianH's Avatar
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    Quote Originally Posted by 06wrx4me View Post
    I thought the LS6 heads were pretty good out of the box. I know the GM Ls6 conversion kit for the ls1, had the ls6 factory heads and the gm "hot cam".
    I'm not sure, I just assumed that would be part of it.

    Quote Originally Posted by Sinister View Post
    With N/A you'd still have to look at internals (not just heads) depending on if you're wanting a high compression engine or not... and cams alone can cost a pretty penny...

    I agree that F/I is much more streetable though. And fiscally, a s/c would probably make the most sense.
    Eh, for just a minor bump the heads work could do for that without going into the block, or just getting the stockers milled. A cam is only ~400 bucks.

  5. #19
    UnBanned Sinister's Avatar
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    Quote Originally Posted by BrianH View Post
    Eh, for just a minor bump the heads work could do for that without going into the block, or just getting the stockers milled. A cam is only ~400 bucks.
    Brian... When you're talking N/A 500whp... where is he getting this power? The stock ls6 got around 325whp if I remember right (405chp)... It doesn't seem to me that cams and exhaust could do that. The block will have to be cracked open...


    And Micah... from my readings on an LS1 forum when I was helping my father with his C5... the Vararam isn't as impressive as they claim it to be. The dyno's were showing 15whp gains. And how often are you going to be above 100mph where the vararam supposedly makes this assinine power # that they speak of?
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  6. #20
    Boba Fett BrianH's Avatar
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    Quote Originally Posted by Sinister View Post
    Brian... When you're talking N/A 500whp... where is he getting this power? The stock ls6 got around 325whp if I remember right (405chp)... It doesn't seem to me that cams and exhaust could do that. The block will have to be cracked open...
    LS6's can get pretty close to that NA without going into the block. Bump compression, milled afrs. .I think ECS has a C5Z package for just this purpose. It can be done. . . whether it can be tolerated is the question to me.

  7. #21
    Resident meany-rator 06wrx4me's Avatar
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    ls6's are pretty beefy. They were rated at 405chp but many guys were getting close to 400whp out of the box. Id bet with cam, full exhaust, reprogram/tune, 450+whp is easily attainable.

    BTW Sinister I have been to Bear Republic Brewery in Healdesburg.
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  8. #22
    Registered User Micah's Avatar
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    The LS6 has upgraded components compared to the LS1, and thus it's components are seen as upgrades for an LS1 owner. But there are other components which would be considered an upgrade for either engine.

    My wishlist currently:

    first:
    ARH headers
    x-pipe
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    second:
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    third:
    wires +plugs
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    cam
    fast 90
    underdrive pulley
    clutch
    flywheel
    trans brace
    3.73 rear
    oil pump
    electric accessories

    I don't work on my own cars anymore. So labor is a factor. I do have friends who are mechanics, which helps a great deal. On top of all that - the economy hasn't inspired much confidence - so for now I'm just going to start paying it down. The car doesn't feel slow yet.
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  9. #23
    Registered User Micah's Avatar
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    This is one of my mechanic friends cars.

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  10. #24
    UnBanned Sinister's Avatar
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    Quote Originally Posted by 06wrx4me View Post
    BTW Sinister I have been to Bear Republic Brewery in Healdesburg.
    You son of a btch...




    I still contend that 500whp on a LS6 with just exhaust, intake and cams is not even close to attainable.
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  11. #25
    Boba Fett BrianH's Avatar
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    Quote Originally Posted by Sinister View Post
    You son of a btch...




    I still contend that 500whp on a LS6 with just exhaust, intake and cams is not even close to attainable.
    Quite a bit more than that, pretty much everything without having to go into the block.

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  12. #26
    Wrinklechops
    Cams aren't really that expensive. $300-500 depending on street-ability, etc.

    Pushrod V8s don't deal with some of the trickery that the OHC V8s do. It's a totally different animal than your average small displacement forced induction motor.

    For example, my 5.9 V8 in my Jeep can handle a good amount of power before ever needing to change out internals. The most engine work ahead for me is cams ($300+), better intake manifold ($500ish), throttle body ($300ish), and of course headers/exhaust and a good PCM (ECU) reflash.

    In fact, the problem for a DD V8 monster usually happens to be the lack of the strength of the drivetrain rather than the motor. You can rack up power quick on a V8 and your tranny/drivetrain can't keep up. You can also get more power for cheaper on a V8 than you can with a smaller displacement forced induction motor.

    Then again, my V8 is cast iron. Aren't the Vette's an aluminum block?

    Has anyone heard of/seen SuperSpeeders?

    The guy who made the movies has/had a Corvette that he decided to have completely built for 700rwhp.

    YouTube - 700 RWHP Vette

    It's super cool! He said after his first 1000 miles he switched over to synthetic oil, went for a 4th gear pull and absolutely destroyed his transmission.
    Last edited by Wrinklechops; 10-28-2009 at 12:16 AM.

  13. #27
    UnBanned Sinister's Avatar
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    Quote Originally Posted by BrianH View Post
    Quite a bit more than that, pretty much everything without having to go into the block.

    East Coast Supercharging Customer Cars

    Scroll down to Mike M.
    I'm just going to mention that's a dynopack....

    Full exhaust, cams and heads is all that guy did... that's pretty impressive, but I still don't think that they'd be able to get that out of a mustang/dynamics dyno.
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  14. #28
    Boba Fett BrianH's Avatar
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    Yeah, it's a dynapack and if you put it on a DynoJet it would probably be even higher. So yes, 500whp on the more generous dyno's is possible, on a heart breaker it's going to be lower.

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