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.575 lift on yellow springs?

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Old 12-01-2011, 02:25 PM
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Default .575 lift on yellow springs?

Thunder racing 224/230 561/575

Was planning on a voodoo 222/228 .567 .567 Lunati told me my stockers will work fine with this cam... would that thunder racing cam be to much, not shure agressive that cam is?
Old 12-01-2011, 02:30 PM
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You'd have to know the ramp rates, but why risk it? Just change the springs.
Old 12-01-2011, 02:56 PM
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Seems ALLOT of guys run these springs with cams up to .580 lift, I figure they were ment to go at lest 100k miles on a stock cam thats .551 lift, same springs in the ls9 with .561 lift and 640hp! I cant imagine they are bad springs, I really would like to stick with them I just dont want to push it to crazy. Does anyone know if thunder racing cams have faster ramps then the voodoo cams ? Lunati Tech guy told me my stock springs will handle there cam just fine.
Old 12-01-2011, 03:47 PM
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why risk it?
Old 12-01-2011, 03:59 PM
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Get real springs. PAC 1218's or PAC 1518's. Cheap, good for a lot of lift, and have excellent reliability.
Old 12-01-2011, 04:18 PM
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https://ls1tech.com/forums/generatio...ngs-tr224.html
https://ls1tech.com/forums/generatio...e-springs.html
https://ls1tech.com/forums/generatio...-question.html
https://ls1tech.com/forums/corvette-...e-springs.html
https://ls1tech.com/forums/generatio...vesprings.html
Old 12-01-2011, 05:03 PM
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You asked they answered and you still believe you'll be OK. It sounds like a conversation with my wife!
Like I'd tell her then. "DO whatever you want to do then"!
Old 12-01-2011, 06:29 PM
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No I dont, thats why I asked! The lunati was tested by a engine builder on Camaro5 and made 515hp/484tq on a engine dyno... ran it with stock springs and push rods and ran it up to 6500, he did a pretty big cam test and reported back with results! He also said that there is no issue with the stock springs with that cam but that would be as big as he would suggest going. This cam is only a tad bigger, thats why I asked. I am not going to run it if its not going to work and be safe, I will stick with my original plan. Thanks for the replies
Old 12-01-2011, 08:02 PM
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Originally Posted by sman
Get real springs. PAC 1218's or PAC 1518's. Cheap, good for a lot of lift, and have excellent reliability.
B-I-N-G-O!

It's cheaper to do it right, than to rebuild you engine.
Old 12-02-2011, 08:39 AM
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SweetC5 I understand sir, but there are lots of folks at camaro5 that are just plain dumb. Take the advise from the guys above, get you some good springs the match up to your cam. Call some vendors from here that sell that cam and tell them you want a nice spring to go with it.
Old 12-02-2011, 10:20 AM
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I would never recommend you run OEM springs with any aftermarket cam. OEM springs are used on lazy/slow cams for 100k miles, lift doesnt matter and hp of engine doesnt matter. Its about the valvetrain as a system.

Aftermarket cams are all by nature more agressive. Get aftermarket springs that are designed to work with aftermarket cams.
Old 12-02-2011, 12:29 PM
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Ok let me you ask this then, If I go with springs that would eat into my tune money. That puts me in the boat of might as well run a larger cam... I was thinking a small cam and a tune, if I were to do say a 226/230 112 .580ish lift would this cam run ok on a stock tune for a wiel?
Old 12-02-2011, 01:10 PM
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Originally Posted by sweetC5
Ok let me you ask this then, If I go with springs that would eat into my tune money. That puts me in the boat of might as well run a larger cam... I was thinking a small cam and a tune, if I were to do say a 226/230 112 .580ish lift would this cam run ok on a stock tune for a wiel?
No - if you can't afford everything then wait.
Old 12-02-2011, 01:28 PM
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Do it right. Get a good tune, get good parts, and you will have a good end result. If you cant afford it, wait till you can so your not redoing it later down the road.
Old 12-02-2011, 01:34 PM
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Originally Posted by sweetC5
Ok let me you ask this then, If I go with springs that would eat into my tune money. That puts me in the boat of might as well run a larger cam... I was thinking a small cam and a tune, if I were to do say a 226/230 112 .580ish lift would this cam run ok on a stock tune for a wiel?
Get more money...
Old 12-02-2011, 01:59 PM
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Will ls7 springs fit/ work? I know the stock ls7 cam is a .591 lift.
Old 12-02-2011, 02:02 PM
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Originally Posted by redctsv
Will ls7 springs fit/ work? I know the stock ls7 cam is a .591 lift.
It's not the lift so much as the ramp rates. OEM cams have lazy ramp rates to promote longevity - they wouldn't be able to carry a 100,000 mile warranty without it. (This was already stated above)
Old 12-02-2011, 02:33 PM
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Originally Posted by MeentSS02
It's not the lift so much as the ramp rates. OEM cams have lazy ramp rates to promote longevity - they wouldn't be able to carry a 100,000 mile warranty without it. (This was already stated above)
Exactly.....Post #11
Old 12-02-2011, 02:56 PM
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I think I am going to stick with the small voodoo, get a tune... run my stock springs for a bit and keep the revs down.( cant race in winter anyway) Save a few bucks and buy springs and a spring tool and swap springs after bit. For as many people tell me to get new springs, I have been told the stock ls3 springs would be fine with that cam
Old 12-02-2011, 02:59 PM
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Originally Posted by sweetC5
I think I am going to stick with the small voodoo, get a tune... run my stock springs for a bit and keep the revs down.( cant race in winter anyway) Save a few bucks and buy springs and a spring tool and swap springs after bit. For as many people tell me to get new springs, I have been told the stock ls3 springs would be fine with that cam
If a company has done some rigorous testing, the springs may very well be fine, but how much do you trust one or two data points? It's a risk that will have to be calculated in your head, and the cost could potentially be an engine rebuild.


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