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tbi headers long tube on a vortec

This is a discussion on tbi headers long tube on a vortec within the Exhaust forums, part of the Performance category; Will the long tube headers from a say 95 model tbi 5.7 fit a 98 vortec 5.7 understanding that will ...

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    tbi headers long tube on a vortec


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    Will the long tube headers from a say 95 model tbi 5.7 fit a 98 vortec 5.7 understanding that will need to weld on a egr tube and relocated the o2 sensors. reason I ask is a set for 4x4 on the 95 is $155 compared to over $400 for the vortec.

    Thanks
    Mac
    '98 GMC X-cab Z71, Full length 2.25" Dual Exhaust, O2 sims, Magnaflow dual in/out X-pipe, Shorty Headers, Cold Air, MPFI Conversion, Rough Country 3", 3" body, 35x12.50x15, 4.88 gears

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    Registered User mud_slinger's Avatar
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    Re: tbi headers long tube on a vortec

    i would like to know too
    97 Z71, 3 inch body, 35s, 16x10 inch wheels, true dual exhaust with imco mufflers, alpine cde-9841 hu, 2 memphis mclass 10s, memphis 2-100 amp
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    Supporting Gold Member GreaseDog's Avatar
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    Re: tbi headers long tube on a vortec

    yes, you should be able to do that no problem. exhaust from there back will have to be fabricated, which shouldnt be an issue since the stock heapipes are crap anyways.
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    Re: tbi headers long tube on a vortec

    Thank you for the reply, I just didn't want to drop the money on something that would be useless to me.

    Thanks
    Mac
    '98 GMC X-cab Z71, Full length 2.25" Dual Exhaust, O2 sims, Magnaflow dual in/out X-pipe, Shorty Headers, Cold Air, MPFI Conversion, Rough Country 3", 3" body, 35x12.50x15, 4.88 gears

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    Re: tbi headers long tube on a vortec

    I bought headers for my 95 and did a test fit to the 98 vortec engine I'm putting in it. Everything looked fine. I think those vortec headers assume you are keeping all of your original egr and O2 crap. That's why they cost more.
    95 Chevy 2wd TBI Vortec 350 5spd. *Ultimate Budget Engine Swap*
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    Re: tbi headers long tube on a vortec

    thank, that's what i like to hear. since i ordered a set this morning...LOL

    Thanks
    Mac
    '98 GMC X-cab Z71, Full length 2.25" Dual Exhaust, O2 sims, Magnaflow dual in/out X-pipe, Shorty Headers, Cold Air, MPFI Conversion, Rough Country 3", 3" body, 35x12.50x15, 4.88 gears

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    Re: tbi headers long tube on a vortec

    Where is Justin, TX??
    95 Chevy 2wd TBI Vortec 350 5spd. *Ultimate Budget Engine Swap*
    Engine: 98 4-bolt Vortec 350|Scat Crank|LT4 Production Cam|1.6 Proform Full Roller Rockers|Edelbrock EPS Intake|454 Throttle Body|Hedman Elite 69840 LT|ZOOM Perfection Clutch|Custom Tune by TBIChips

    98 ecsb 4x4 38" TSLs

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    Re: tbi headers long tube on a vortec

    North of Fort Worth, south of Denton Very close to Texas Motor Speedway.
    '98 GMC X-cab Z71, Full length 2.25" Dual Exhaust, O2 sims, Magnaflow dual in/out X-pipe, Shorty Headers, Cold Air, MPFI Conversion, Rough Country 3", 3" body, 35x12.50x15, 4.88 gears

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    Re: tbi headers long tube on a vortec

    Oh ok. That's cool. I've been to Forth Worth a couple times.
    95 Chevy 2wd TBI Vortec 350 5spd. *Ultimate Budget Engine Swap*
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    98 ecsb 4x4 38" TSLs

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    Re: tbi headers long tube on a vortec

    Set a email to Hedman, this is there reply.
    Hello:

    Yes, the 69440 will for the truck, but your Vortec heads prefer d port hedders, and that hedder is not available in d port.

    Thank you,

    Hedman
    '98 GMC X-cab Z71, Full length 2.25" Dual Exhaust, O2 sims, Magnaflow dual in/out X-pipe, Shorty Headers, Cold Air, MPFI Conversion, Rough Country 3", 3" body, 35x12.50x15, 4.88 gears

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    Re: tbi headers long tube on a vortec

    The 96+ headers have an exhuast port on them since the vortec motors use an EGR fitting on the stock manifolds.

    Without it hooked up, youll probably throw a code. Id think it would need unplugged too or youd have an exhuast leak when it opened. Id recommend having it deleted via a computer tune.
    Last edited by ZZ4Blazer; 12-18-2008 at 04:18 PM.
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    Re: tbi headers long tube on a vortec

    Can you put the egr sensors from the 96+ manifolds in the headers for a 95? id like to put headers on my 96 too, and would love to buy the cheap 88-95 ones if i could.

    also, if i put headers on and didnt hook up the sensors, would the motor still run good or not?
    Last edited by 96chevy15004x4; 12-18-2008 at 07:38 PM.

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    Re: tbi headers long tube on a vortec

    I have shorty's on it now, If all goes properly I will try to install the tbi's on mine first of the year. re weld the EGR port to the new headers from the shorties. But with the holidays and kids, no play money at this time.
    '98 GMC X-cab Z71, Full length 2.25" Dual Exhaust, O2 sims, Magnaflow dual in/out X-pipe, Shorty Headers, Cold Air, MPFI Conversion, Rough Country 3", 3" body, 35x12.50x15, 4.88 gears

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    Re: tbi headers long tube on a vortec

    Quote Originally Posted by f350_6x6
    North of Fort Worth, south of Denton Very close to Texas Motor Speedway.
    Yep, I drive right by there on my way from Grapevine to Bridgeport on 114.

    TBI headers will fit fine with Vortec heads. You just need to add bungs in the header collectors for the pre-cat 02 sensors. I would replace the cats with some high flow aftermarket units. Finally the EGR fitting can be bought and added to keep you smog compliant.
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    wish money grew on trees 97whitez-71's Avatar
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    Re: tbi headers long tube on a vortec

    Quote Originally Posted by Fast305
    Yep, I drive right by there on my way from Grapevine to Bridgeport on 114.

    TBI headers will fit fine with Vortec heads. You just need to add bungs in the header collectors for the pre-cat 02 sensors. I would replace the cats with some high flow aftermarket units. Finally the EGR fitting can be bought and added to keep you smog compliant.
    yea i was just about to add this. The TBI headers only have a pre cat o2 in one of the headers where a vortec needs a precat o2 in each header. I'm not sure if the o2 sensors are the same style or not. I've got a set of hookers sittin in my garage that I at least need one bung welded into.
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  16. #16
    Manbearpig
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    Re: tbi headers long tube on a vortec

    So TBI headers will work fine for me since Im blocking my EGR and have no 02 sensor bull****?


    Pacesetter longtubes for vortecs are to ****ing expensive.

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    Re: tbi headers long tube on a vortec

    Think of O2 sensors less like emissions bull**** (evil) and more like a fuel economy item. I'm getting longtubes in a couple days and have bungs in hand (1 for stock O2, 1 for WB ).
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    Re: tbi headers long tube on a vortec

    The TBI headers should include O2 sensor bungs in them. Just not the EGR fittings.
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    wish money grew on trees 97whitez-71's Avatar
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    Re: tbi headers long tube on a vortec

    Quote Originally Posted by ZZ4Blazer
    The TBI headers should include O2 sensor bungs in them. Just not the EGR fittings.
    They only have them in one side. Not in both. I have a set in the box in my garage right now. They will need one o2 sensor welded in the other header to work on a vortec motor.
    Last edited by 97whitez-71; 12-29-2008 at 08:16 AM.
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    Re: tbi headers long tube on a vortec

    Quote Originally Posted by 97whitez-71
    They only have them in one side. Not in both. I have a set in the box in my garage right now. They will need one o2 sensor welded in the other header to work on a vortec motor.
    Yup, he's right, teh TBI headers willonly have a single O2 sensor bung and its not in the correct Vortec position.

    I always thought you could use the TBI O2 sensor bung as an EGR feed, then install 2 other O2 sensor bungs in the collectors.

    I have been running the 2462 1hkr TBI headers on my Vortec 350 for 8 years now.

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