Thread: I Need A Head Count For Headers

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  1. #21 Re: I Need A Head Count For Headers 
    Moderator DanPrixGTP's Avatar
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    Hmm sounds interesting.

    You could count me in.
    '97 GTP - Stage 2 Heads, 90# Springs, 1.9 Harland Sharp Rockers, Gen V, 3.0, Intake, N* TB, LQ4, FSIC, 10.5mm Wires, Poly Mounts, SLP Headers, Borla Exaust, Built Trans - SOLD*

    '08 G8 GT - 6.7L 408CI Stroker, 239/254 Cam, Fast Intake, 102mm TB, CAI, Full Exhaust.





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  2. #22 Re: I Need A Head Count For Headers 
    I live here. SlowNA06's Avatar
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    Quote Originally Posted by Bio248 View Post
    2" is probably too big.

    even a 3" collector is too big for most, which is every set of headers except S&S.
    Too big for what?
    Irridium spark plugs last 100k mi and work just as well as copper. Copper is a waste on N/A and only lasts 15k mi. Don't use Platinum.
    Use 195* tstat unless you can thoroughly explain why not; 99.9% don't need a lower temp.
    Almost any oil filter, ever, is of higher quality than ACDelco. Spend $6+.
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  3. #23 Re: I Need A Head Count For Headers 
    DUI BABY Bio248's Avatar
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    no one really needs that amount of flowability unless they go big, amirite?

    losing velocity is not something you want.
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  4. #24 Re: I Need A Head Count For Headers 
    I live here. SlowNA06's Avatar
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    I'm under the impression that less backpressure is better. Please explain why smaller primaries is more helpful. Clearly, 1.75" seems to be fairly agreed-upon by our current vendors, but I don't understand why you wouldn't want bigger primaries if you can manage to fit them.
    Irridium spark plugs last 100k mi and work just as well as copper. Copper is a waste on N/A and only lasts 15k mi. Don't use Platinum.
    Use 195* tstat unless you can thoroughly explain why not; 99.9% don't need a lower temp.
    Almost any oil filter, ever, is of higher quality than ACDelco. Spend $6+.
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  5. #25 Re: I Need A Head Count For Headers 
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    Velocity.

    Went from Pacesetters to SD's, boost went down, thus flow increased.

    Smaller primaries FTW.
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  6. #26 Re: I Need A Head Count For Headers 
    The Blue One blueguy's Avatar
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    Smaller primaries are only better because the factory ports are junk.

    Open the ports.

    Outflow SD's and create an obstruction in the exhaust flow. Stock valvetrain also blows. Upgrade that. INcrease flow.

    Thus, Pacesetter's and TOG X's come into play.

    Regardless, flow will still be slightly better up top with the larger primaries IMO.

    I have no evidence. Just, I told you so.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
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    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  7. #27 Re: I Need A Head Count For Headers 
    GTP Level Member WhiteLightningGTP's Avatar
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    Depending on if they're bolt-in or weld-in, I'm in.
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  8. #28 Re: I Need A Head Count For Headers 
    GPFs Sexy Ginger. SilvaMan61's Avatar
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    If they turn out to be good Id possibly be a buyer.
    SMGPFC Member #9
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  9. #29 Re: I Need A Head Count For Headers 
    I live here. SlowNA06's Avatar
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    Professor Bio, sprinkle us with wisdom from your mighty brain!
    Irridium spark plugs last 100k mi and work just as well as copper. Copper is a waste on N/A and only lasts 15k mi. Don't use Platinum.
    Use 195* tstat unless you can thoroughly explain why not; 99.9% don't need a lower temp.
    Almost any oil filter, ever, is of higher quality than ACDelco. Spend $6+.
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  10. #30 Re: I Need A Head Count For Headers 
    GTP Level Member BlackGT97's Avatar
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    Update: really tossing the idea now n probably pitting it in motion.. Anyone else interested??
    1997 Grand prix GT Black Coupe- The beater
    1998 Grand prix GT Black coupe- Top swapped, XP cam
    2008 Grand prix Midnight blue- The slow but nice car
    1999 Chevrolet Silverado red ext. Cab
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  11. #31 Re: I Need A Head Count For Headers 
    GXP Level Member GTPpower's Avatar
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    These cars have a positive displacement blower. Exhaust velocity means little to nothing at WOT.

    The reason exhaust primaries are not huge is because we need to keep the O2 sensors happy....and obviously space restrictions.


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
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    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  12. #32  
    GrandPrix Junkie Sandman's Avatar
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    Maybe
    05 Saab 9-2X Linear (Saabaru)
    77 Morris Garage B
    Quote Originally Posted by TLSheff View Post
    You said "I'm done with it"... car says "Oh, really? *trollface*"
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  13. #33  
    GTP Level Member dazedandconfused's Avatar
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    If affordable I might buy a set

    Sent from my iPhail
    97 gtp, cone filter mod, downpipe and glasspack to stock muffler mod, 180* t-stat mod, bad driver mod
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  14. #34 Re: I Need A Head Count For Headers 
    GT Level Member Mikey Bonefas's Avatar
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    possibly.. dunno yet, but possibly.
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  15. #35 Re: I Need A Head Count For Headers 
    GTX Level Member HVACgtp's Avatar
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    Depends on price and quality, if decent I'd be down
    2001 Silver GT; K&N Intake, 2.5in catback to flowmaster 40's, custom tune, led tails drag wheels and halos......SOLD
    2004 Silver GTP - its got some stuff http://www.grandprixforums.net/deja-vu-71112.html
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  16. #36 Re: I Need A Head Count For Headers 
    SE Level Member harner's Avatar
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    I may be interested after seeing some pics of the finished product.
    1998 Grand Prix GT Sedan - SOLD

    10 Camaro 2SS/RS | 94 TA | 87 IROC | 06 Silverado 1500
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