Thread: Ported exhaust manifolds for 3800 engines

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  1. #1 Ported exhaust manifolds for 3800 engines 
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    I have a pair of front and rear ported exhaust manifolds, will fit supercharged and non supercharged engines, both have been welded and opened up, $180. shipped, i live in liberty center, any questions or for pics feel free to call or text me at 419-388-7825
    Last edited by t1264rk; 11-08-2013 at 10:35 AM.
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  2. #2 Re: Ported exhaust manifolds for 3800 engines 
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    I still have these, with a new price
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  3. #3 Re: Ported exhaust manifolds for 3800 engines 
    GT Level Member Erics00LS's Avatar
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    No offense but you could reconsider your price. People buy headers for this much...
    '03 Buick Park Avenue Ultra - a few bolt ons
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  4. #4 Re: Ported exhaust manifolds for 3800 engines 
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    im open to offers
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  5. #5 Re: Ported exhaust manifolds for 3800 engines 
    Never Be A Tim. ILoveAudi's Avatar
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    Quote Originally Posted by Erics00LS View Post
    No offense but you could reconsider your price. People buy headers for this much...
    Be careful what you say, for sales thread rules state you can't criticize peoples' prices. Just a heads up.
    1998 GTP Coupe - DIY Intake, Stock - 178k miles with rusty weight reduction (sold)
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  6. #6 Re: Ported exhaust manifolds for 3800 engines 
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    If anyone is interested, i will take $150. shipped
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  7. #7 Re: Ported exhaust manifolds for 3800 engines 
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    If anyone is interested $125. shipped
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  8. #8 Re: Ported exhaust manifolds for 3800 engines 
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    What makes these better than regular manifolds? I haven't gotten a chance to look at a stock pair of manifolds yet but every post I've seen says there's not much room for improvement unless you happen to cut open the front one and hog it out.
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  9. #9 Re: Ported exhaust manifolds for 3800 engines 
    SE Level Member twiztid's Avatar
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    Quote Originally Posted by usetaboost View Post
    What makes these better than regular manifolds? I haven't gotten a chance to look at a stock pair of manifolds yet but every post I've seen says there's not much room for improvement unless you happen to cut open the front one and hog it out.
    The welding referenced is the improvement in the rear. The factory welding was done on the inside, causing an obstruction. If the outside is welded, the inside welds can be removed, to get a bit more air through.

    The fronts are typically opened up with some sort of grinder.
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  10. #10 Re: Ported exhaust manifolds for 3800 engines 
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    these have been welded under the exhaust port, then opened up inside the manifold, rear has been done, but not as much as the front, if you take a look at a stock manifold, they are very restrictive
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