3.6L GT3 Header Part Numbers
#1
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Can anyone help me out and post the part numbers for each side 997.1 GT3 exhaust manifold?
Looking to pick some up for my 996 and need to confirm the part number difference between the 3.6 and 3.8.
Much appreciated!
Looking to pick some up for my 996 and need to confirm the part number difference between the 3.6 and 3.8.
Much appreciated!
#2
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996GT3 mk1 / mk2 / RS
(motorsport part)
99611110193
99611110293
997.1GT3
99711302191
99711302291
997.2GT3/RS
99711302194
99711302294
997 GT3 4L
99711302197
99711302297
But they are expensive so don't buy new.. with the same money you can get aftermarket headers and/or better cats.
(motorsport part)
99611110193
99611110293
997.1GT3
99711302191
99711302291
997.2GT3/RS
99711302194
99711302294
997 GT3 4L
99711302197
99711302297
But they are expensive so don't buy new.. with the same money you can get aftermarket headers and/or better cats.
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Elliotw44 (08-16-2021)
#6
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John, I've also been considering a set up similar to sharkwerks 6GT3 3.9, is it safe to assume that the OEM 7GT3 3.8 & 3.6 exhaust manifolds are interchangeable?
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#8
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yup.
But why?
They come with junk cats, offer no real HP gains over the 6 ones, and the only reason Porsche used them was their superior performance emission wise.
( even in their marketing material they never implied otherwise)
They also helped them with the then new layout, of two valved side mufflers and rear center section.
Best,
But why?
They come with junk cats, offer no real HP gains over the 6 ones, and the only reason Porsche used them was their superior performance emission wise.
( even in their marketing material they never implied otherwise)
They also helped them with the then new layout, of two valved side mufflers and rear center section.
Best,
#11
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yup.
But why?
They come with junk cats, offer no real HP gains over the 6 ones, and the only reason Porsche used them was their superior performance emission wise.
( even in their marketing material they never implied otherwise)
They also helped them with the then new layout, of two valved side mufflers and rear center section.
Best,
But why?
They come with junk cats, offer no real HP gains over the 6 ones, and the only reason Porsche used them was their superior performance emission wise.
( even in their marketing material they never implied otherwise)
They also helped them with the then new layout, of two valved side mufflers and rear center section.
Best,
Last edited by jmla; 04-03-2012 at 01:30 AM.
#12
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I don't know about the 4.0 setup specifically, but there are real quantifiable gains to be had with less restrictive cats on 3.8's. By the looks of the math, some 3-5% in rwhp based on recent track data on my own car.