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LS6 springs with a .558 cam

Old 07-05-2005, 08:28 PM
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Default LS6 springs with a .558 cam

Im planning on running them on a cam with .558. Being .008 over I wouldnt think would be a problem, but I was wondering if anyone had any hard facts from experience. I dont need to hear from the cyber mechanics that quote mechanoc talk like scripture because of what they have heard.

Thanks.
Old 07-05-2005, 08:41 PM
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Come to think about it, I think I can grind .008 off the top of each lobe and then dress it up with a fine file. Maybe polish it back to smooth with some emory cloth.

What do you guys think?
Old 07-05-2005, 08:42 PM
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Yeh, that should work out fine.
Old 07-05-2005, 08:44 PM
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I'm pretty sure LS6 springs are rated to .570 lift
Old 07-05-2005, 08:48 PM
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Well in that case Im gonna get my first cam choice which has a .588 lift and just grind .018 off the lobes and then dress them down like I was talking about.
Old 07-05-2005, 11:25 PM
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Originally Posted by Full-Force
Well in that case Im gonna get my first cam choice which has a .588 lift and just grind .018 off the lobes and then dress them down like I was talking about.


How about you just buy a damn 918 spring and be happy.


Honestly I have ran a 220/224 553/556 on a 117LSA for over a year with LS6 springs with no problems.
That is damn close to the lift your at and should work fine.
Old 07-05-2005, 11:26 PM
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Are you serious about all of this "grinding the cam lobes down" business, or just yanking our proverbial cranks? Sounds like a lot of work to save 100 bucks on new springs.

LPE recommends (and provides in their kit) LS6 springs with the GT2-3 cam, which has .581 lift..

It depends on the ramp rate of the lobes as well. We need more info.
Old 07-05-2005, 11:44 PM
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Old 07-06-2005, 12:13 AM
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Why go to the trouble of getting a cam and knowingly excede the amount of lift the spring was designed to take. Are serious about really grinding lift off a cam. Id tell you not to get a cam and just get a bottle instead but you seem like the kinda person that would blow your **** up. Sorry if I came off as a dick, but the question is crazy from the start.
Old 07-06-2005, 12:58 AM
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Originally Posted by oange ss
I'm pretty sure LS6 springs are rated to .570 lift
i think the 02+ springs are.
Old 07-06-2005, 01:40 AM
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guys he is pulling out timing chains on this.
HHAHAHAHAHA
Or at least I hope he is.
Old 07-06-2005, 07:14 AM
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Originally Posted by Full-Force
Come to think about it, I think I can grind .008 off the top of each lobe and then dress it up with a fine file. Maybe polish it back to smooth with some emory cloth.

What do you guys think?
I think that is an innovative idea.

.008 isn't that much to file off, hell you could just put it in a small press an mash it down.

You could always just stretch the spring by .008 to compensate for the extra lift. Just give it a little tug on each end with some pliers.

Are you going to file down the sides of the lobe as well to decrease the ramp angles or maybe you could peen them down with a small hammer and then bondo them smooth.

Please post your results after you are done. I'd like to see some dyno numbers and pictures on how that works for you.

Seriously, it depends on the lobe profile if you can use the LS6 springs. If you are using an agressive profile lik a comp XER or TR lobe, I'd use comp 918 springs. If you are using an older, less agressive lobe you might be able to get by with the LS6 springs. Remember it isn't always the peak lift that will screw your springs, it may be the rate of lift that the springs can't control.

The best advice I can give is to call the cam manufacturer and ask them what springs they recommend...then buy them.

Last edited by equandt; 07-06-2005 at 07:31 AM.
Old 07-06-2005, 07:21 AM
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Hi Folks
The LS6 springs/heads can handle .570 lift so why worry about trying to grind .008 off a cam - this isn't a problem
Bill
Old 07-06-2005, 07:59 AM
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Originally Posted by Casperws6
i think the 02+ springs are.

yes, 02+...01 are rated to .540
Old 07-06-2005, 06:21 PM
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OK, I cant take it anymore.

Of course Im bs'n about filing the cam.
Old 07-06-2005, 06:49 PM
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The way I see it you have 2 options:

1. Get different springs.

2. Get a smaller cam.

End of story .
Old 07-06-2005, 08:35 PM
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Sorry for toying with peoples emotions. I have a cam and matching springs picked out.
Old 07-07-2005, 04:06 AM
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Originally Posted by Full-Force
Sorry for toying with peoples emotions. I have a cam and matching springs picked out.
I about **** myself when I first read this, lol.
Old 07-07-2005, 06:24 AM
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Originally Posted by Full-Force
Sorry for toying with peoples emotions. I have a cam and matching springs picked out.
What is the purpose of this thread? - do you have idle time, try reading a book or maybe comic book!
Bill
Old 07-07-2005, 07:06 AM
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Originally Posted by equandt
I think that is an innovative idea.

.008 isn't that much to file off, hell you could just put it in a small press an mash it down.

You could always just stretch the spring by .008 to compensate for the extra lift. Just give it a little tug on each end with some pliers.

Are you going to file down the sides of the lobe as well to decrease the ramp angles or maybe you could peen them down with a small hammer and then bondo them smooth.

Please post your results after you are done. I'd like to see some dyno numbers and pictures on how that works for you.
Nice


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