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LT headers for nnbs gmt900's

This is a discussion on LT headers for nnbs gmt900's within the Exhaust forums, part of the Performance category; i know that dynamaxx makes a kit but does anyone other than pacesetter have one the you can fit to ...

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    Registered User mikeith's Avatar
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    LT headers for nnbs gmt900's


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    i know that dynamaxx makes a kit but does anyone other than pacesetter have one the you can fit to the 07-08 5.3's little little to know modifications... the dynamaxx system i can get for 1300 which is alot more than i want to spend on headers

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    Registered User versace133's Avatar
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    Re: LT headers for nnbs gmt900's

    have you looked into the jba shortys, sorry not sure if you wanted long tubes or shortys. though i hear the jba's are nice

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    Registered User mikeith's Avatar
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    Re: LT headers for nnbs gmt900's

    long tube

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    I Hate You All, Equally.
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    Re: LT headers for nnbs gmt900's

    Because of all the emissions crap with the newer trucks (GMT900's) your probably gonna have to pay a whole lot for the system. is this dynamaxx set the kind with the cats in it already? i know they had a kit for the NBS trucks that cost a pretty penny as well, but essential for those who wanted to keep their truck legal.


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    Re: LT headers for nnbs gmt900's

    I would refrain to post cat exhaust changes only on something that new. The emissions equipment is tighter then ever and I'd hate to spend that kind of money and then have check engine lights and drivability issues. Really the stock shorty cast manifolds flow extremely well for what they are these days. One thing you could do pretty easy is pull them off and port them, knock down the casting flash, open up the ports, gasket match and so on. Now that might be worth while and shouldn't cost you anything really.
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    Registered User mikeith's Avatar
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    Re: LT headers for nnbs gmt900's

    yeah it has the cats and the y pipe

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    Registered User mikeith's Avatar
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    Re: LT headers for nnbs gmt900's

    gibson makes shorty's but i cant imagine them doing any good performance wise. so you dont think lt' will do much for performance?
    Last edited by mikeith; 03-10-2008 at 08:04 PM.

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    Registered User mikeith's Avatar
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    Re: LT headers for nnbs gmt900's

    what about jba shorties?

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