Thread: How far to mod before reliablilty become an issue?

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  1. #1 How far to mod before reliablilty become an issue? 
    SE Level Member speedy2's Avatar
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    I have an '05 Comp G. Currently stock. I have a used CAI and 3.4" pulley on the way.

    CAI will go in. Pulley will just sit on the shelf until other mods are in. I practically got it for free.

    I've read bluegtp91's thread many time and plan on following it to a T.

    Is a 3.4" pulley with all the supporting mods still a reliable setup? This is a daily driven family car. lol. That's why I ask. Should I maybe step back to a 3.6? Also, what kind I gas mileage can I expect with a 3.4 and 3.6 setup?
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  2. #2 Re: How far to mod before reliablilty become an issue? 
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    A big part of the reliability is how you drive it. If you treat it like a rental car, stock will have troubles. Gas mileage and how long the engine lasts with a standard 3.4 setup will depend a lot on how good the tune is. Get a good tune and you should see an improvement in gas mileage and have a long lasting engine.

    2002 GTP: GMPP Sway Bars, BMR trailing arms, KYB AGX/Vogtlands, 12" brake upgrade
    Modified SSAC headers, K&N Intake, 3.4 MPS, S1X, Gen V, 104's, HPTuned.
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  3. #3 Re: How far to mod before reliablilty become an issue? 
    SE Level Member speedy2's Avatar
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    OK. Anyone in the Panama City, FL area know of any places to tune? I'm actually about 45 minutes north. I'm thinking I'm stuck with a mail order tune because I'm in such a rural area. Everything else shouldn't be a problem.
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  4. #4 Re: How far to mod before reliablilty become an issue? 
    resident snitch gtpinsc's Avatar
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    with u having a gen V blower.. id stick to a 3.6 pulley to start. a 3.4 setup on a a gen III is the same as a 3.6 on gen V. a good tune with supporting mods should net better gas mileage than stock with "normal" driving.... of course if u stay in boost all the time ur gonna have ****ty gas mileage.

    02 GTP with mods 05 GP for DD
    Quote Originally Posted by SuperSport View Post
    The majority of the people here are potheads who want to buy good condition parts at junkyard prices.
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  5. #5 Re: How far to mod before reliablilty become an issue? 
    GTX Level Member 03GTPLE's Avatar
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    There was a guy that tuned customer cars, but he doesn't do it anymore. He lives north of PCB on 231. I'm in Enterprise, AL, but I don't have tuning software...

    However, you can meet local people on panamacitylsx.com
    02 ws6 ta on here is the owner of the site (same name)

    ....they are trying to have a get together for haloween weekend....
    2003 White Grand Prix GTP Limited Edition
    - 3.4 pulley, tune by Boostd1/CLINT@AIR, Short Ram Intake, PLOG, 3" ZZP Downpipe, AL 104's, 180* t-stat, Impala STB & 12" cross drilled/slotted/zinc washed rotors, DDM HID's, and put in a heads up display for now...
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  6. #6 Re: How far to mod before reliablilty become an issue? 
    The mod from over yonder TheOtherNick's Avatar
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    I would do a 3.6 setup on your car. I pulled 30mpg on my 3.4 rocker car.
    01 gtp-big cam e85 dd 78dodge- guzzling fuel 05 cummins- rollin coal
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  7. #7 Re: How far to mod before reliablilty become an issue? 
    Resident HOMOsapien ZR1Vette09's Avatar
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    Quote Originally Posted by gtpinsc View Post
    with u having a gen V blower.. id stick to a 3.6 pulley to start. a 3.4 setup on a a gen III is the same as a 3.6 on gen V. a good tune with supporting mods should net better gas mileage than stock with "normal" driving.... of course if u stay in boost all the time ur gonna have ****ty gas mileage.
    What he said about the pulley size.

    3.4 on 97-03 = 3.6 on 04+
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  8. #8 Re: How far to mod before reliablilty become an issue? 
    Turbo is the way to go. REDCRAPGP's Avatar
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    Stick w/ a 3.6 Gen V won't need a smaller pulley like the prev years. Im in Pensacola what town are you in. So far I had no luck w/ tuners around my area so I went with a Overkill PCM and so far so good.
    Squirrels are my engine. I need a Ford Regal
    04 Comp G.
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  9. #9 Re: How far to mod before reliablilty become an issue? 
    DUI BABY Bio248's Avatar
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    reliability drops considerably the second you start to mod the car. when you drop pulleys, it drops even more.

    its only a matter of time.
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  10. #10 Re: How far to mod before reliablilty become an issue? 
    The Blue One blueguy's Avatar
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    Agreed, axles, transmission...its all gonna sh1t on you like the poo cocktail supreme.

    A base tuned PCM, intake, 3.6", and headers...REALLY probably won't kill your car if you don't drive it like a moron. Then again, you can break anything if you drive it stupid...even a Aveo.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
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  11. #11 Re: How far to mod before reliablilty become an issue? 
    SE Level Member speedy2's Avatar
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    Thanks guys. Know a guy that had an '04 Comp G and had a 3.4", CAI, Tune, 3" DP, and he ran fine. That's who I'm buying the pulley and CAI from lol. So, I guess maybe I should swap for a 3.6" or keep the 3.4" and take it real easy. Decisions, Decisions.

    Any guesstimates on track times with a basic 3.6" setup on this car?
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  12. #12 Re: How far to mod before reliablilty become an issue? 
    The Blue One blueguy's Avatar
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    3.6"...knock is WAY easier to be had on a GenV car...a 3.4" on a GenV is cam territory...or you could go with a 3.4" and hit it with E85 or Methanol Injection...there are always ways to get around knock.
    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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    '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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  13. #13 Re: How far to mod before reliablilty become an issue? 
    SE Level Member speedy2's Avatar
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    Quote Originally Posted by bluegtp91 View Post
    3.6"...knock is WAY easier to be had on a GenV car...a 3.4" on a GenV is cam territory...or you could go with a 3.4" and hit it with E85 or Methanol Injection...there are always ways to get around knock.
    Ok. I'm thinking maybe Intercooler. E85 is about nonexistent around here. Methanol isn't going to be practical, unless I only went WOT at the track. I'm either going with a 3.6 or a 3.4" and more mods than I planned. Maybe I'll just get the wife a car lol.
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  14. #14 Re: How far to mod before reliablilty become an issue? 
    The Blue One blueguy's Avatar
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    $500 beater Honda FTW.

    I had a '86 Civic for like a week I bought for $100 before it chucked a rod through the bottom of the block...granted I bought it like that...just wanted to see how long it would last...and it ALMOST went 7 full days hah. Had over 320K on it too...factory clutch too...oh boy it was fun.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
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  15. #15 Re: How far to mod before reliablilty become an issue? 
    SE Level Member speedy2's Avatar
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    Nice. Thanks for that help. I think I may keep the 3.4 and just wait to put it on until I can get everything else done. Probably do headers and a few other little things. Then save up for the cam/tune/intercooler all at once.
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  16. #16 Re: How far to mod before reliablilty become an issue? 
    The Blue One blueguy's Avatar
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    Never hurts to keep the stock pulley...like you said just toss everything else on there. It'll for sure be safer then.
    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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  17. #17 Re: How far to mod before reliablilty become an issue? 
    Turbo is the way to go. REDCRAPGP's Avatar
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    More importantly get something to scan with like a aerofroce scan gauge before u drop pulley sizes so u can see wht the knocks looking like.
    Squirrels are my engine. I need a Ford Regal
    04 Comp G.
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  18. #18 Re: How far to mod before reliablilty become an issue? 
    The Blue One blueguy's Avatar
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    A scan gauge is useless on a stock pullied car
    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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  19. #19 Re: How far to mod before reliablilty become an issue? 
    resident snitch gtpinsc's Avatar
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    think he was just gettin to the point of gettin a scanner first.. the drop.. then scan.

    02 GTP with mods 05 GP for DD
    Quote Originally Posted by SuperSport View Post
    The majority of the people here are potheads who want to buy good condition parts at junkyard prices.
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  20. #20 Re: How far to mod before reliablilty become an issue? 
    The Blue One blueguy's Avatar
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    I know, but its not always in the best interest of the person to always get a scanner...especially if they don't plan to drop pulley sizes right away.
    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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