Turbo cam selection
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From: Louisville, Ky
Originally Posted by Pro Stock John
You should dyno before and after, and help advance our knowledge of how much power can be gained from the swap.
Originally Posted by black98ws6ta
He obviously is too broke for that 
My vote is something like a 224/230//114... I'd keep the LSA below 115 so that you don't push your peak higher than where you want to shift. Making another 10rwhp but having to spin your motor high isn't worth it.
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Anyone ever notice this??????
01 ZO6 cam: 204/211 .525/.525 -116 LSA
Lingenfelter GT2 205/212 .540/.540 –116.5CL
02-03 ZO6 cam: 204/218 .551/.547 -117.5 LSA
Lingenfelter GT2-3 207/220 .571/.578 –118.5CL
05-07 ZO6 cam 210/230 .561/.557 –120.5 LSA
Lingenfelter GT7 208/230 .554/.546 –121CL
Pretty simular don't you think?
Does anyone know how the LSA and ICL are different and how they affect power/driveability? Thanks.
01 ZO6 cam: 204/211 .525/.525 -116 LSA
Lingenfelter GT2 205/212 .540/.540 –116.5CL
02-03 ZO6 cam: 204/218 .551/.547 -117.5 LSA
Lingenfelter GT2-3 207/220 .571/.578 –118.5CL
05-07 ZO6 cam 210/230 .561/.557 –120.5 LSA
Lingenfelter GT7 208/230 .554/.546 –121CL
Pretty simular don't you think?
Does anyone know how the LSA and ICL are different and how they affect power/driveability? Thanks.
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We have these cam threads over and over, and the evidence is pretty basic. All cams around 225/225 are not real big. I personally think that a 02-04 Z06 cam is the minimum worth swapping in... below that I would not simply bother. You really can't go wrong with something in that 225/225 range for turbo or supercharger. Folks go bigger for even more power, and because they like the sound. 225/225 stuff barely lopes.
Now when should a supercharged guy go 230/236 or something like that? More power. But that car might lose some lowend, and the idle will be much more choppy.
How about a 240/248? That's a big cam.
I think kp's cam swap kinda said that he picked up 1mph from the swap. So if you are looking for a little more, it's worth it. If you rarely race and don't even know what your car traps, maybe a bigger cam doesn't make sense.
But I've oversimplified and not even looked at what a 230/230/112 would do compared to a 225/225//114. Which cam (for example) might make more power under the curve?
Now when should a supercharged guy go 230/236 or something like that? More power. But that car might lose some lowend, and the idle will be much more choppy.
How about a 240/248? That's a big cam.
I think kp's cam swap kinda said that he picked up 1mph from the swap. So if you are looking for a little more, it's worth it. If you rarely race and don't even know what your car traps, maybe a bigger cam doesn't make sense.
But I've oversimplified and not even looked at what a 230/230/112 would do compared to a 225/225//114. Which cam (for example) might make more power under the curve?
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From: Norn Iron
How long is a piece of string....
There simply is far too many variables to say that one cam is better than another. I also dont really think 1mph is enough to say that a cam is actually a better performer, although Im not aware of the info you refer to.
But if you stick with a "small" cam, you can be guaranteed of good results. Go big...and Id say its open to debate. Certainly the more dedicated racers do opt for big cams. But is that a trend, or because of genuine dyno testing that has proven the results ?
There simply is far too many variables to say that one cam is better than another. I also dont really think 1mph is enough to say that a cam is actually a better performer, although Im not aware of the info you refer to.
But if you stick with a "small" cam, you can be guaranteed of good results. Go big...and Id say its open to debate. Certainly the more dedicated racers do opt for big cams. But is that a trend, or because of genuine dyno testing that has proven the results ?
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Originally Posted by SStolen
Anyone ever notice this??????
01 ZO6 cam: 204/211 .525/.525 -116 LSA
Lingenfelter GT2 205/212 .540/.540 –116.5CL
02-03 ZO6 cam: 204/218 .551/.547 -117.5 LSA
Lingenfelter GT2-3 207/220 .571/.578 –118.5CL
05-07 ZO6 cam 210/230 .561/.557 –120.5 LSA
Lingenfelter GT7 208/230 .554/.546 –121CL
Pretty simular don't you think?
01 ZO6 cam: 204/211 .525/.525 -116 LSA
Lingenfelter GT2 205/212 .540/.540 –116.5CL
02-03 ZO6 cam: 204/218 .551/.547 -117.5 LSA
Lingenfelter GT2-3 207/220 .571/.578 –118.5CL
05-07 ZO6 cam 210/230 .561/.557 –120.5 LSA
Lingenfelter GT7 208/230 .554/.546 –121CL
Pretty simular don't you think?
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Posts: 2,153
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Originally Posted by 2002/Black/SS
i haev the GT-7 with a 121 LSA, will that make my car make peak power up high?
Mike
You could have a higher rpm peak hp, and less power under the curve, than say if you looked at cams that had more duration and less lsa.
Simply put, why would someone do a 230/230//112 cam vs. say a 230/230//115 cam? What's really the difference? Well maybe the 115 cam will peak like 400 rpms higher, and the power curve might not be as strong as the 112 cam. I am of course just generalizing. Drag cars are more focused on average power and power under the curve. Because when they shift they want the hp to be as high as possible so that the car will accelerate as fast as it can. So a lot of racers want the power to be straight line across. So they shift at 7000 rpms, where they make 800rwhp, and the rpms drop down to 6200 where they make 675rwhp... If the power level dropped down to like 550rwhp, then the car would take a lot longer to accelerate. The other reason is that for drag cars, it would be unlikely that they would spend more than 1500 rpms in 2nd or 3rd gear. Think about it.
I'm running like a 236/236/113.5 camshaft. Would I make more power with a 225/225? Nope. Would the 225/225 cam'd setup run within a mph of this cam? Dunno, but I would hope that the 236 cam'd setup would run at least 2mph better otherwise I probably wouldn't bother. Should I have done a 240/240 cam? I bet Kurt would be like heck yeah, but I'd also be running a dry sump'd solid roller shifting it at 8200.
Simply put, why would someone do a 230/230//112 cam vs. say a 230/230//115 cam? What's really the difference? Well maybe the 115 cam will peak like 400 rpms higher, and the power curve might not be as strong as the 112 cam. I am of course just generalizing. Drag cars are more focused on average power and power under the curve. Because when they shift they want the hp to be as high as possible so that the car will accelerate as fast as it can. So a lot of racers want the power to be straight line across. So they shift at 7000 rpms, where they make 800rwhp, and the rpms drop down to 6200 where they make 675rwhp... If the power level dropped down to like 550rwhp, then the car would take a lot longer to accelerate. The other reason is that for drag cars, it would be unlikely that they would spend more than 1500 rpms in 2nd or 3rd gear. Think about it.
I'm running like a 236/236/113.5 camshaft. Would I make more power with a 225/225? Nope. Would the 225/225 cam'd setup run within a mph of this cam? Dunno, but I would hope that the 236 cam'd setup would run at least 2mph better otherwise I probably wouldn't bother. Should I have done a 240/240 cam? I bet Kurt would be like heck yeah, but I'd also be running a dry sump'd solid roller shifting it at 8200.
