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Old 07-10-2014, 09:28 PM   #1
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Looking into LT headers!!

So I have a 98' mustang GT and I'm looking I into buying some LT headers but some the mechanic in the mufflers shop told me that I "shouldn't do that and that I should get short tube because long tubes require motor mounts".. Can someone please tell me that a lie ???
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Old 07-10-2014, 09:39 PM   #2
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Never heard of that being needed, but just so happens to be something you should consider. Also.. Your car came with shirt tubes from the factory

I say do it! Full exhaust 2v sound great!
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Old 07-10-2014, 10:05 PM   #3
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If you live in an area that tests for emissions, you better make sure that they will be legal. In many places, long tube headers are not allowed.
Long tubes are a royal pain in the *** to install.
Shorties offer NO performance gain over the stock exhaust manifolds, they will, however, change the exhaust note a bit.
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Old 07-11-2014, 06:04 AM   #4
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Your mechanic is an idiot. Or he just doesn't want to do the work because they are a pain in the *** to install, require dropping the K. Also, for a good set that fits right you are looking at $1k and that is just for the headers themselves and the midpipe. The cheap ones you see like the Pypes/Pacesetters are junk, the BBK ones have a big kink in one of the primaries to clear the steering shaft so that leaves the SLP as your best "good" one and the one I would recommend.

Also, for a NPI 98GT you are not going to see much at all from a longtube install and as was mentioned above, they might not be legal depending on where you are located. First thing I would do for a NPI car is look into a PI swap if you don't have that already. Then worry about bolt ons/suspension and look into longtubes as one of the last things you do.

In all honesty, the factory manifolds on a 4.6L are not restrictive, at least not enough for them to be worth swapping out IMO. It isn't like the old pushrods where the factory headers were just garbage and required a R2 as soon as possible.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.

Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.
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Old 07-11-2014, 10:48 AM   #5
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Thanks alot!! ^^ sound like you know your stuff ! I guess I'll just look into that PI swap... I really just wanted them because of that nice not it gives .. Lol any advice on that PI swap?
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