Thread: Ported Heads Turbo Setup?

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  1. #1 Ported Heads Turbo Setup? 
    Never Be A Tim. ILoveAudi's Avatar
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    I've been trying to layout the plans for my cheap turbo setup that I'm piecing together. I had a set of heads made up by iceman with plans of doing an intercooled, heads, s1x setup... but now that I'm planning on going to turbo, I was planning on doing a stock manifold setup in an effort to save money. My question is is it possible to run ported heads on stock manifolds? If not, is it possible to port the manifolds enough to make it work? Or could the rear manifold at least be ported enough and I could just run a front plog? Any input would be appreciated. The reason I'm trying to stay away from a front and rear plog setup is because of cost of them and also the extra cost of getting a crossover with a wastegate perch.
    P.S. Heads are Josh's "stage 3" setup. They're pretty well ported.
    1998 GTP Coupe - DIY Intake, Stock - 178k miles with rusty weight reduction (sold)
    1998 GTP Sedan - CT turbo kit, billet wheel pt61, s1x blower cam, Iceman stage 3 heads, 90# springs for all the valve floatz, walbro pump, fuel pump rewire *slowest s1x build ever*
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  2. #2 Re: Ported Heads Turbo Setup? 
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    are you planning on hitting a specific horsepower number and/or ET/trap speed? if not, sell the heads and run the stock heads. is this on a L67/L32 or L36/L26?
    old setup-Z7 Turbo Kit w/T66, A2A I/C, stock cam & valvetrain/LS1 MAF/Ported 99TB/PowrTuner/AFC/Devils Own/LS1M Scanner/PRJ FP/42# Injs=12.3@118mph street tires -
    (Sold)BACK TO M90 Vs cam w/3.5" pulley/meth/25* timing+bolt-ons
    01 Z28 A4 HP-self-tuned, LTs, FTRA, 3600stall 12.3@112mph
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  3. #3 Re: Ported Heads Turbo Setup? 
    Never Be A Tim. ILoveAudi's Avatar
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    I don't have a specific power number, I just want to keep it mild, so I'm going to likely be running very low boost with it. This is on an l67 btw.
    1998 GTP Coupe - DIY Intake, Stock - 178k miles with rusty weight reduction (sold)
    1998 GTP Sedan - CT turbo kit, billet wheel pt61, s1x blower cam, Iceman stage 3 heads, 90# springs for all the valve floatz, walbro pump, fuel pump rewire *slowest s1x build ever*
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  4. #4 Re: Ported Heads Turbo Setup? 
    GXP Level Member GTPpower's Avatar
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    Stock manifolds are fine.


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  5. #5 Re: Ported Heads Turbo Setup? 
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    then just sell the heads and use that towards the turbo parts. see sig below. i ran stock motor with ZZP's Z7 kit. never blew a headgasket. it did chip #5 cyl but it was my fault cause i turned off my meth injection and it ran lean on part throttle in boost. ran plenty 15psi+ (partly cause i had a built trans back then) and never blew a HG.
    old setup-Z7 Turbo Kit w/T66, A2A I/C, stock cam & valvetrain/LS1 MAF/Ported 99TB/PowrTuner/AFC/Devils Own/LS1M Scanner/PRJ FP/42# Injs=12.3@118mph street tires -
    (Sold)BACK TO M90 Vs cam w/3.5" pulley/meth/25* timing+bolt-ons
    01 Z28 A4 HP-self-tuned, LTs, FTRA, 3600stall 12.3@112mph
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  6. #6 Re: Ported Heads Turbo Setup? 
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    Quote Originally Posted by GTPpower View Post
    Stock manifolds are fine.
    the rear will definately be fine. i would suggest a front plog i ran that way for a long time. when i first went turbo i ran a stock front manifold on 9lbs and never had an issue.
    - 2001 Grand Prix XGT -- 11.21@124MPH
    - 2010 Chevy 2500HD LTZ -- Car hauler
    - 2011 BMW 328i Xdrive -- Wife's Daily
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  7. #7 Re: Ported Heads Turbo Setup? 
    Never Be A Tim. ILoveAudi's Avatar
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    Thanks for the info!
    1998 GTP Coupe - DIY Intake, Stock - 178k miles with rusty weight reduction (sold)
    1998 GTP Sedan - CT turbo kit, billet wheel pt61, s1x blower cam, Iceman stage 3 heads, 90# springs for all the valve floatz, walbro pump, fuel pump rewire *slowest s1x build ever*
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