Thread: Modding to 300 hp

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  1. #1 Re: Modding to 300 hp 
    GTX Level Member GOTIT4CHEAP16's Avatar
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    Am i at 300 or over with my current mods?

    3.0
    SD Headers
    AL104
    180 tstat
    PRJ Wires
    42.5 Injectors
    ZZP Stage 2 Intercooler

    I raced my friends brothers GXP and we were basically dead even but he did SLOWLY pull on my top end on 1 of 3 of our runs.
    Gen V, 3.0, Stage 2 heads, XP Cam, SD Headers, N*, LQ4, ZZP Stage 2 Gen 3 Intercooler, CAI, AL 104's Gapped to .055, #130 Springs, 42.5lb Injectors, ZZP Tune.

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  2. #2 Re: Modding to 300 hp 
    GTX Level Member asite57's Avatar
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    Quote Originally Posted by GOTIT4CHEAP16 View Post
    Am i at 300 or over with my current mods?

    3.0
    SD Headers
    AL104
    180 tstat
    PRJ Wires
    42.5 Injectors
    ZZP Stage 2 Intercooler

    I raced my friends brothers GXP and we were basically dead even but he did SLOWLY pull on my top end on 1 of 3 of our runs.
    if you have a tune and its done correctly then you should be over 300hp
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  3. #3 Re: Modding to 300 hp 
    The Blue One blueguy's Avatar
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    Quote Originally Posted by GOTIT4CHEAP16 View Post
    Am i at 300 or over with my current mods?

    3.0
    SD Headers
    AL104
    180 tstat
    PRJ Wires
    42.5 Injectors
    ZZP Stage 2 Intercooler

    I raced my friends brothers GXP and we were basically dead even but he did SLOWLY pull on my top end on 1 of 3 of our runs.
    If a pullied, intercooled, exhaust car isn't making north of 275 FWHP...especially on a 3.0" pulley...I'm gonna say...hmmm...get a solid tune. But, figure in drivetrain loss...you'd be around 300 or more CHP.

    Rynoman made nearly 250 FWHP on a 3.4", DP, tune...etc...back in the day. So I'd hope .4" of a pulley drop, a full size IC, and headers, and a good tune would make more than just 25 HP more...even at the crank(should be good for nearly 300 WHP IMO)...since most stock GXP struggle to put down 260~ FWHP from the factory.
    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
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  4. #4 Re: Modding to 300 hp 
    GTP Level Member sdavis11b's Avatar
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    Quote Originally Posted by bluegtp91 View Post
    If a pullied, intercooled, exhaust car isn't making north of 275 FWHP...especially on a 3.0" pulley...I'm gonna say...hmmm...get a solid tune. But, figure in drivetrain loss...you'd be around 300 or more CHP.

    Rynoman made nearly 250 FWHP on a 3.4", DP, tune...etc...back in the day. So I'd hope .4" of a pulley drop, a full size IC, and headers, and a good tune would make more than just 25 HP more...even at the crank(should be good for nearly 300 WHP IMO)...since most stock GXP struggle to put down 260~ FWHP from the factory.
    I just had mine dynoed. Same mods, came out to 270 FWHP 295 TQ with the 3.0.

    2004 GTP - TEP TRANS, INTERCOOLER, 3.0, AND PLENTY OF KR...
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