Thread: Pulley size to hp gains

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  1. #1 Pulley size to hp gains 
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    About how much power would I gain from a drop from stock to 3.4 or 3.25 after my tune? Is there like a ratio of pulley size to psi to hp gained?
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  2. #2 Re: Pulley size to hp gains 
    I live here. MoarkatsINmuhtrailer's Avatar
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    other mods?
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  3. #3 Re: Pulley size to hp gains 
    LaBarge Supercharged sseilmnop's Avatar
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    You've got 40 posts, why don't you make a signature with your cars make, model and mods?
    Adapters, Phenolic Intercoolers, Supercharger Parts & TVS2300
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  4. #4 Re: Pulley size to hp gains 
    Moderator dsmuts's Avatar
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    You'll lose power if your stock otherwise.
    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
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  5. #5 Re: Pulley size to hp gains 
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    CAI and axleback exhaust
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  6. #6 Re: Pulley size to hp gains 
    The Blue One blueguy's Avatar
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    Why don't you read the link in my signature too, because neither of those do anything for a pulley drop.

    I had 12~ psi on a 3.0"

    It's all about flow.

    It's not about how small of a pulley you can run.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
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  7. #7 Re: Pulley size to hp gains 
    GTP Level Member KeithGTP03's Avatar
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    You should get some flow mods first or you're going the wrong way.

    03 GTP...Its got pulleys and stuff.
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  8. #8 Re: Pulley size to hp gains 
    I live here. MoarkatsINmuhtrailer's Avatar
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    how in the hell do you have an axle back exhaust on a front wheel drive car?
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  9. #9 Re: Pulley size to hp gains 
    Moderator dsmuts's Avatar
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    duh mike front axle all the way back.
    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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