Lpe gt2-3 or the hawks comp cheatr cam?
#22
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Actually you can. The lobes are soft. It is the ramp rate that kills springs. I believe even LPE provides LS6/now LS2 springs with them. Will they did.
Yep I just pulled the cam card. still there:
Recommended valve springs: GM LS9 or LS6/LS2 valve springs (90 lbs seat/290 lbs open) 1.7:1 rocker applications
Yep I just pulled the cam card. still there:
Recommended valve springs: GM LS9 or LS6/LS2 valve springs (90 lbs seat/290 lbs open) 1.7:1 rocker applications
#23
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Actually you can. The lobes are soft. It is the ramp rate that kills springs. I believe even LPE provides LS6/now LS2 springs with them. Will they did.
Yep I just pulled the cam card. still there:
Recommended valve springs: GM LS9 or LS6/LS2 valve springs (90 lbs seat/290 lbs open) 1.7:1 rocker applications
Yep I just pulled the cam card. still there:
Recommended valve springs: GM LS9 or LS6/LS2 valve springs (90 lbs seat/290 lbs open) 1.7:1 rocker applications
#25
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#26
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LPE's own cam card indicates it is fine. I copy pasted the line above. Here is the entire document. https://www.lingenfelter.com/PDFdown...L210085297.pdf
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#31
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Yeah. I asked the same question here years ago. I was told it is the ramp rate. Which is why the old TR 220/220 .550 cam could not use LS6/2 springs because it was quite aggressive(based on the Comp XER lobe IIRC) and the GT2-3 could despite a peakier lobe.
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#34
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LPE's own cam card indicates it is fine. I copy pasted the line above. Here is the entire document. https://www.lingenfelter.com/PDFdown...L210085297.pdf
#36
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It's cool tech and is harder on the springs since it shoots the valve off the seat.
Kip from cam motion explained it some and I found another thread on a quick google search, i'm sure you could find as good or better info if you look around. I just quickly grabbed these.
https://www.corvetteforum.com/forums...sk-and-xe.html
https://ls1tech.com/forums/generatio...m-lobes-2.html
Last edited by 00pooterSS; 07-31-2018 at 02:58 PM.
#37
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LPE provided LS6 then LS2 looks like LS9 springs now with their cam kits. The former two for years. No issues reported here or elsewhere.
LPE's GT2-3 cam and spring kit are like the "Old Reliable combo" and they issued GM springs with it.
Last edited by Felix C; 07-31-2018 at 02:58 PM.
#38
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Some lobe designs that have came out have a more aggressive ramp rate and get the valve off the seat quickly and up into the meat of the lift faster and the valve spends more time at higher lift is the idea.
It's cool tech and is harder on the springs since it shoots the valve off the seat.
Kip from cam motion explained it some and I found another thread on a quick google search, i'm sure you could find as good or better info if you look around. I just quickly grabbed these.
https://www.corvetteforum.com/forums...sk-and-xe.html
https://ls1tech.com/forums/generatio...m-lobes-2.html
It's cool tech and is harder on the springs since it shoots the valve off the seat.
Kip from cam motion explained it some and I found another thread on a quick google search, i'm sure you could find as good or better info if you look around. I just quickly grabbed these.
https://www.corvetteforum.com/forums...sk-and-xe.html
https://ls1tech.com/forums/generatio...m-lobes-2.html
#39
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I am not arguing anything about lobe design. It doesnt matter if the lobe takes forever and a day to get to peak lift or its a square lobe (Im exaggerating obviously). Peak is peak and when you choose to run a spring that must control a cam with a lobe lift greater than the spring is rated for, you are going outside the spring manufacturer's specification, which is asking for trouble. If 99.9% of people have no issues great, but being that 0.1% person really sucks if a spring lets go, especially since its a single not a dual.
Last edited by 00pooterSS; 07-31-2018 at 05:15 PM.