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what heads would you recommend

This is a discussion on what heads would you recommend within the Internal Engine forums, part of the LSx Technical Help Section category; im thinking PRC stage 1 heads with a magic stic 4 cam its supposed to net 129hp with supporting bolt ...

  1. #1
    N/A nitrously aspirated stangslayer98's Avatar
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    what heads would you recommend

    im thinking PRC stage 1 heads with a magic stic 4 cam its supposed to net 129hp with supporting bolt ons on an engine dyno any thoughts

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    🤔 11s. blackbirdbrain89's Avatar
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    go with afr street heads ther flow jet numbers kill and other brand..

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    Member blackls1ta's Avatar
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    for most people more bang for buck is where its at so.. id say stage 2.5 prc,its not worth the money for top of the line heads unless its a strictly race car,5 or 10 hp wont make a difference thats my 2 cents.

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    The Slow and the Broke ImportIntimidator's Avatar
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    I know you pretty much have in mind what your going to get

    But heres a pretty sweet system I plan on implementing. Saw the install and test #s on the Chevy Performance website
    Patriot Performance Package:
    • GM LS6 Style Stage II Heads, heat treated, 5-axis valve job,bronze guides, and precision welded chamber 59cc
    • Fully assembled valvetrain including stainless steel valves, "Gold" .650" dual springs, titanium retainers, super 7 locks, machined bases, and viton rubber seals.
    • Billet camshaft 226/226 .585/.585 112LSA
    • Harland Sharp Shaft Mounted Rockers available in 1.7 (non-adj.)
    • Includes new GM Head bolts.


    506 hp and 459 lb-ft. for 1,895.00......hard to beat that combo

    also other options include a higher cc combustion chamber (64) as well as other cam and rocker options

  5. #5
    Wants to be Snowboarding FuhBreezeE's Avatar
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    Stg IV a4
    '99 TA Ws777

    Patriot Stage II Ls6 Style heads/Comp 224/230/fast 90/90
    426.8rwhp with full bolt-ons....

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    N/A nitrously aspirated stangslayer98's Avatar
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    not bad sounds like a sweet deal.... those prc heads are based on the ls6 casting cnc-ported to achieve 310 cfm on the intake the head is milled .005 to ensure a flat sealing surface they retail for 999.99 each im going to phone the company to see if they come assembled cause if they dont you got a nice deal ill look into it thanks does that $1895.00 include those harland sharp rockers

  7. #7
    The Slow and the Broke ImportIntimidator's Avatar
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    Quote Originally Posted by fabrizi View Post
    Patriot Stage II Ls6 Style heads/Comp 224/230/fast 90/90
    426.8rwhp with full bolt-ons....
    yeah i forgot to mention, that was not rwhp.. the build was on a crate engine

  8. #8
    N/A nitrously aspirated stangslayer98's Avatar
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    hmmm the prc's made 529hp@ 6,600 rpm's 464 ftlbs torque on the engine dyno with cam and supporting mods

  9. #9
    The Slow and the Broke ImportIntimidator's Avatar
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    Quote Originally Posted by stangslayer98 View Post
    not bad sounds like a sweet deal.... those prc heads are based on the ls6 casting cnc-ported to achieve 310 cfm on the intake the head is milled .005 to ensure a flat sealing surface they retail for 999.99 each im going to phone the company to see if they come assembled cause if they dont you got a nice deal ill look into it thanks does that $1895.00 include those harland sharp rockers
    yes the price includes the rockers..its an awesome deal i.m.o, i pm'ed u the link

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    Wants to be Snowboarding FuhBreezeE's Avatar
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    Stg IV a4
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    My #'s were on an a4 btw...

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    The Slow and the Broke ImportIntimidator's Avatar
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    Quote Originally Posted by stangslayer98 View Post
    hmmm the prc's made 529hp@ 6,600 rpm's 464 ftlbs torque on the engine dyno with cam and supporting mods
    curious to know where you found the dyno.. advertises PRC heads add 50hp for a little over $1000...if bigger gains are true it just seams wierd to me that they would underrate their product

  12. #12
    N/A nitrously aspirated stangslayer98's Avatar
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    not bad them rockers arent cheap

  13. #13
    N/A nitrously aspirated stangslayer98's Avatar
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    january 2007 issue of gm high tech performance they probably meant 50 more hp on top of what the cam made average hp through out the cycle was 398hp 431lb-ft peak was 529hp 464lb-ft respectively
    Last edited by stangslayer98; 10-17-2007 at 10:50 AM.

  14. #14
    Impounded
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    You can with that and make 420-440rwhp, but i have seen those numbers put down with 241 hand ported heads, a buddy of mine hand ported and polished his own heads. With a 232/232 .595/.595 112lsa cam with a lsx intake manifold and hand ported heads he made over 425rwhp. He spent almost no money on the heads, when i see you guys pay 1200-1500 for a set of heads you are only getting 10-15rwhp more than port and polished ls1 heads, kinda seems like alot of money for 10rwhp. Sometimes you guys make 420 or so rwhp which is what can be made with hand port ls1 heads.

  15. #15
    N/A nitrously aspirated stangslayer98's Avatar
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    did flowbench numbers reveal an increase in airflow

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    Member MikeMoss's Avatar
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    Quote Originally Posted by ImportIntimidator View Post
    But heres a pretty sweet system I plan on implementing. Saw the install and test #s on the Chevy Performance website
    Patriot Performance Package:
    GM LS6 Style Stage II Heads, heat treated, 5-axis valve job,bronze guides, and precision welded chamber 59cc
    Fully assembled valvetrain including stainless steel valves, "Gold" .650" dual springs, titanium retainers, super 7 locks, machined bases, and viton rubber seals.
    Billet camshaft 226/226 .585/.585 112LSA
    Harland Sharp Shaft Mounted Rockers available in 1.7 (non-adj.)
    Includes new GM Head bolts.


    506 hp and 459 lb-ft. for 1,895.00......hard to beat that combo

    also other options include a higher cc combustion chamber (64) as well as other cam and rocker options
    Is this a special someone is having or something could you post a link to it please?

  17. #17
    2-Legit-2-Quit bgable's Avatar
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    Quote Originally Posted by ImportIntimidator View Post
    But heres a pretty sweet system I plan on implementing. Saw the install and test #s on the Chevy Performance website
    Patriot Performance Package:
    GM LS6 Style Stage II Heads, heat treated, 5-axis valve job,bronze guides, and precision welded chamber 59cc
    Fully assembled valvetrain including stainless steel valves, "Gold" .650" dual springs, titanium retainers, super 7 locks, machined bases, and viton rubber seals.
    Billet camshaft 226/226 .585/.585 112LSA
    Harland Sharp Shaft Mounted Rockers available in 1.7 (non-adj.)
    Includes new GM Head bolts.


    506 hp and 459 lb-ft. for 1,895.00......hard to beat that combo

    also other options include a higher cc combustion chamber (64) as well as other cam and rocker options
    can you buy this as a package any where or you just go and get the parts individually?and was this on a stock motor with bolt ons or...?

  18. #18
    Member blackls1ta's Avatar
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    id like to know see link also

  19. #19
    Junior Member Hamrhead's Avatar
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    What pistons are you running? Are they after market? If the are flat you will need to fly cut your pistons to make clearance with that cam and milled heads. IMO I would look at AFR heads or ETP. ETP is a little more expensive though.

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    Quote Originally Posted by blackls1ta View Post
    id like to know see link also
    +1 please.

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