Thread: installed 1.9 rockers

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  1. #1 installed 1.9 rockers 
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    Just got them on my 01 wondering what pulley I can run now? I have a 3.4 with SD headers and dp, intense PCM, 180stat,104s, all that good stuff. Was thinking of a 3.25 or possibly a 3.3..3.25..3.2? I need some feedback

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  2. #2 Re: installed 1.9 rockers 
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    I mean go as low as you can without out any KR, i would say you should be able to go to a 3.2.. but that will also depends on your tune.
    04 Top-swapped, 3.2 pulley, ZZP 1.9 rockers w/ #90 springs,Mild P&P heads, Pacesetter Headers, Sseilmnop 2" Phenolic Intercooler with stage 3 HE, ZZP billet fuel rails, 42.5lb injectors, 3" full exhaust, all poly mounts,other supporting mods.
    oh and weight addition mods: CTS-V brake upgrade, 14" GT500 rotors

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  3. #3 Re: installed 1.9 rockers 
    Moderator dsmuts's Avatar
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    I ran a 3.4 on my rockered setup
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  4. #4 Re: installed 1.9 rockers 
    GrandPrix Junkie ItHurtz's Avatar
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    Answer is 3.4

    Cam or intercool for lower
    2000 GTPT Sold-brandonhall10 built trans
    2009 Challenger SRT8
    http://www.grandprixforums.net/threa...uestion.....no
    Expert at being gay.
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  5. #5 Re: installed 1.9 rockers 
    GrandPrix Junkie machinegunsquid's Avatar
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    I'd stick with the 3.4 and tune for the rockers.

    "**** bills. You can live in your car but you can't race your house" -dsmuts
    Want her to stop when she's not looking karate chop her in her crotch that should quiet her for a bit or at the very least put a smile on your face -REDCOMPG
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  6. #6 Re: installed 1.9 rockers 
    The Blue One blueguy's Avatar
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    Get a wideband.

    Get someone who can tune it.

    You can just say, I've got "X" mods therefore "Y" pulley is best choice.

    Like stated, I'd keep the 3.4", and I would have also put better valve springs on if you didn't....and get the car dialed in correctly. Smaller pulley doesn't mean the car will be faster.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
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