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Cylinder-Head-and-Cam Package, 1999-05 402 CID LS1 600 HP

This is a discussion on Cylinder-Head-and-Cam Package, 1999-05 402 CID LS1 600 HP within the Internal Engine forums, part of the LSx Technical Help Section category; Someone seriously needs to buy this package and write a review before I decide to pull the trigger! Anyone thought ...

  1. #1
    Freezin in AK! ArcticZ06's Avatar
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    Old: 00 WS6, 02 Z06, 79TA
    11 F350 CC 6.7L

    Cylinder-Head-and-Cam Package, 1999-05 402 CID LS1 600 HP

    Someone seriously needs to buy this package and write a review before I decide to pull the trigger! Anyone thought about ordering one of these? They're only $2,955.

    600HP Package
    http://www.slponline.com/view_product.asp?P=12227

    525HP Package
    http://www.slponline.com/view_product.asp?P=12226

    Don't know the HP on this package but it says its emissions legal and only $2,548.75
    http://www.slponline.com/view_product.asp?P=12225
    Last edited by ArcticZ06; 09-01-2007 at 04:05 PM. Reason: Added price

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    !!!!!!!!!!!!!!!!!!!!!!!!! ATCharming's Avatar
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    am i missing something? i dont see a price

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    Freezin in AK! ArcticZ06's Avatar
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    Old: 00 WS6, 02 Z06, 79TA
    11 F350 CC 6.7L

    Quote Originally Posted by ATCharming View Post
    am i missing something? i dont see a price
    $2,955.55

    Its on the left side.

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    Freezin in AK! ArcticZ06's Avatar
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    Old: 00 WS6, 02 Z06, 79TA
    11 F350 CC 6.7L

    The HP estimates seem pretty high on these compared to what others have reported with their head/cam combo. What do you guys think?

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    Slow'er'Ass Mr. Luos's Avatar
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    It is what SLP claims....flywheel numbers. Even then....


    They are bogus. That is what SLP does.



    Oh...and that is just for the heads and cam, not for the entire 402ci.

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    Member TACE02's Avatar
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    ASC #753
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    HOLY INFLATING NUMBERS BATMAN!!! Yeah The is in order. but yes looks like SLP is guessing at flywheel HP ratings.

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    !!!!!!!!!!!!!!!!!!!!!!!!! ATCharming's Avatar
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    they are optimistic flywheel ratings. u could put that money elsewhere

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    Senior Member Zboner's Avatar
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    yea on a good cam and L92 heads

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    Member TACE02's Avatar
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    hell if you allready have a 402, then I would go with LS7 heads (flow over 330 CFM @.600 lift, from the factory) and a nice healthy cam. And with a stage 2 or 3 port on them hmmmm, who knows what they will flow.

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    For that price you could go with Trickflow's Heads and cam. It's 3100$. I have their H/C/I on my 95 mustang Gt and it really woke the car up. They make really good products that last. Check it out

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    Quote Originally Posted by TACE02 View Post
    hell if you allready have a 402, then I would go with LS7 heads (flow over 330 CFM @.600 lift, from the factory) and a nice healthy cam. And with a stage 2 or 3 port on them hmmmm, who knows what they will flow.
    You are thinking of L92 heads. Not ls7. You must have a minimum of 4.10 bore to run ls7 heads.

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    BTW I would not call those ratings too optimistic on a 402. Matter of fact I would say the 525 one is a little low. That package with the rest of the bolt-ons should see almost 500 rwhp.

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    Member TACE02's Avatar
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    Quote Originally Posted by FASTSS View Post
    You are thinking of L92 heads. Not ls7. You must have a minimum of 4.10 bore to run ls7 heads.
    o yeah, duh... thats right they are on 427's right. now that would be NICE!!!

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    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by FASTSS View Post
    BTW I would not call those ratings too optimistic on a 402. Matter of fact I would say the 525 one is a little low. That package with the rest of the bolt-ons should see almost 500 rwhp.
    The 525HP one is on the 346ci...

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    ASC #753
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    yeah I would have to see that to believe it. A 525 HP Head and Cam only combo for a 346 CI from SLP...

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    Senior Member Tyler_LS1's Avatar
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    Pewter
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    Maybe its with full boltons and supporting mods as well that it would produce that much horsepower.
    1999 Camaro SS/ Pewter/ #1775 - LS1 6-speed - Predator 3 Custom Tune - Pro 5.0 - LS7 Clutch - 3.90's - Koni's - Strano Springs and Sway Bars - SFC's - Full UMI Chassis and Suspension - LS6 Intake PnP TB - ARH LT's and Kitty Ran Away - Magnaflow.

    12.6 at 112

    http://www.fquick.com/Tyler_LS1

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    ASC #753
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    Doesn't mention it in the advertisement, and even with full bolt-ons, I don't see it.

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    Maybe those numbers are a little inflated but not much. 525 at the crank is has to be less then 450rwhp. Those are AFR heads and I don't see why with full bolt ons you wouldn't be in the ballpark of those numbers. Still I think you can do better for 3k.

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    Nik
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    Quote Originally Posted by TACE02 View Post
    o yeah, duh... thats right they are on 427's right. now that would be NICE!!!
    okay now help me out l92 heads are what I want if i plan on building a 427? or I want the ls7 heads? and the ls1 can only be bored over by .030 making it a 355 with out the 4" stroke crank so does that equall the minimum boee 0f 4.10 for the ls7 heads?

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    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by NIKDSC5 View Post
    and the ls1 can only be bored over by .030
    I would only go .010" over on the stock LS1 block.

    And no, you wouldn't be looking at 4.100" bore.
    The stock LS1 bore is 3.898".

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