GMT 900 Trucks General Discussion 2007 - 2013 Trucks | General Discussion

So whats the deal with these "Cammed Tunes"

Old Apr 21, 2011 | 09:53 PM
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Thumbs up So whats the deal with these "Cammed Tunes"

So i noticed that John Lund is doing these "cammed tunes" with the new Mustang 5.0, Apparently it has to do with increasing the duration in the tune via the cam phasers. Since the 6.2L's have VVT also I wonder if something like this can be done as well, that would be cool just for the "Sound". What do yall think ?


http://www.youtube.com/watch?v=QKBiyAhzNQ0
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Old Apr 22, 2011 | 09:42 AM
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man thats awesome.. but some 5.3's come with vvt also.. mine has it.. i wonder if it can be done. and if it hurts performance.
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Old Apr 22, 2011 | 09:51 AM
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lol so now we need to worry about mustangs that have stock cams that sound cammed??? lol. dont be a poser and just get a damn bump stick IMO
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Old Apr 22, 2011 | 10:02 AM
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^^ agree with this guy totally ^^
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Old Apr 22, 2011 | 10:12 AM
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Just another way to make the Stang guys believe that they can't be beat...lol
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Old Apr 22, 2011 | 10:38 AM
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I know nothing about these "cammed tunes" or 5.0s but based on my understanding of DOHC and VVT they wouldn't be able to adjust duration but rather lobe seperation. With two cams you can increase or decrease the LSA on the fly instead of beings stuck with one measurement like we are. Our current VVT motors only have one cam and therefore can't do this because the intake lobes and exhaust lobes are always in the same place in relation to each other.
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Old Apr 22, 2011 | 11:34 AM
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Originally Posted by TXsilverado
lol so now we need to worry about mustangs that have stock cams that sound cammed??? lol. dont be a poser and just get a damn bump stick IMO
this ^
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Old Apr 22, 2011 | 11:37 AM
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Originally Posted by Robert91RS
I know nothing about these "cammed tunes" or 5.0s but based on my understanding of DOHC and VVT they wouldn't be able to adjust duration but rather lobe seperation. With two cams you can increase or decrease the LSA on the fly instead of beings stuck with one measurement like we are. Our current VVT motors only have one cam and therefore can't do this because the intake lobes and exhaust lobes are always in the same place in relation to each other.
YUP! thought about it and we do not have multiple cams. like the fords lol..
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Old Apr 22, 2011 | 01:34 PM
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I know this does nothing from a performance stand point, but i still think its pretty kool you can do that just with a tune without turning a wrench. It poser worthy i'll give you that, but why do people put mufflers on there vehicles, for sound.

I just think its an aspect that could be explored for the tuners out there, maybe Wheatley will chime in on this to shed some light.
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Old Apr 22, 2011 | 01:49 PM
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I wont hate on the mod motor guys for tweeking their the cam phasing at idle for a cool sound so long as it doesn't have any negative effect on power or perfomance. If I was getting a tune and the tech offered a choppy idle AND all the same power gains through the rest of the rpm band I'd probly bite.
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