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How much to expect from a cam swap?

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Old 08-10-2010, 12:02 PM
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Default How much to expect from a cam swap?

Im currently running stock cam, and with 8psi I put down 485whp through a stock clutch(committed suicide on 3rd dyno pull). How much can I expect to gain from swapping to a Z06 cam or something bigger? Will the difference between the Z06 and like the EPP blower cam be nominal in terms of numbers?
Old 08-10-2010, 12:24 PM
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You will see about 510-520 with the LS6 cam at the same boost level.
Old 08-10-2010, 01:05 PM
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didnt parish pick up almost 100 hp ???? or was that at a higher boost level???
Old 08-10-2010, 03:57 PM
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Your stock clutch did NOT commit suicide...It was murdered.
Old 08-10-2010, 04:04 PM
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We'll call it assisted suicide. lol
Old 08-10-2010, 07:12 PM
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Originally Posted by yelo04goat
didnt parish pick up almost 100 hp ???? or was that at a higher boost level???
Not at peak, the gain was lower in the power band.
Old 08-10-2010, 09:16 PM
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I have close to the same setup and I was told the EPP cam would net almost 60 rwhp. I'll now in a couple of months.
Old 08-10-2010, 11:19 PM
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With a non-boost cam (F13) and ls6 heads, I am making 533hp on 6lbs.
Old 08-11-2010, 04:39 AM
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Originally Posted by 9t8z28
I have close to the same setup and I was told the EPP cam would net almost 60 rwhp. I'll now in a couple of months.
Let us know how it performs for you. We've had N/A cars pick up 60 rwhp with our cam, who can't yet afford to go forced induction, but are planning on doing so. Bob
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Old 08-11-2010, 07:53 AM
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Originally Posted by yelo04goat
didnt parish pick up almost 100 hp ???? or was that at a higher boost level???
That was with a 5.3l and a 5.3l cam which is very small compared to even a ls1 cam.
Old 08-11-2010, 11:29 AM
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Originally Posted by Bob@BruteSpeed
Let us know how it performs for you. We've had N/A cars pick up 60 rwhp with our cam, who can't yet afford to go forced induction, but are planning on doing so. Bob
If I pick up your cam Ill need to upgrade the valvesprings also, correct? What about lifters? Thanks
Old 08-11-2010, 11:41 AM
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Originally Posted by XtremeDime
If I pick up your cam Ill need to upgrade the valvesprings also, correct? What about lifters? Thanks
Well you can't run stock springs on the ls6 cam either. Lifter should be ok and just get some partiot springs.
Old 08-11-2010, 11:44 AM
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Will do
Originally Posted by Bob@BruteSpeed
Let us know how it performs for you. We've had N/A cars pick up 60 rwhp with our cam, who can't yet afford to go forced induction, but are planning on doing so. Bob
Old 08-11-2010, 12:04 PM
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Originally Posted by dschmittie1
Well you can't run stock springs on the ls6 cam either. Lifter should be ok and just get some partiot springs.
I already have ls6 yellows. I was just on Brute Speed's site reading about the cam and recommendations. I have a friend with some Patriot springs lying around, I suppose I could snag them. Id feel alot better if I picked up some ls7 lifters, they are only 150$.

Im pretty much sold on the Brute Force FI cam now. :p
Old 08-11-2010, 03:35 PM
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That EPP / Brute speed cam suits centrifugal setups more than a turbo setup. I think you'd be much happier with a custom specced cam.
Old 08-11-2010, 04:25 PM
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I wouldn't even consider running second hand springs. Springs fatigue and fail over time. Buy new ones. If you can't swing it right now, then sit tight until you can.
Old 08-13-2010, 01:06 AM
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Anyone have an idea why the Brute Speed FI cam wouldnt be good for turbo?
Old 08-13-2010, 03:51 AM
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That cam has a 50 degree intake valve closing event. In a naturally aspirated engine this would be a pretty high rpm cam, most good N/A cams for a 346 run between 39-48 degree IVC. This 50 degree IVC will have poor low end torque, which is what you want for a turbo. Great supercharger cam as superchargers have different airflow requirements with rpm. If you plan on running a 7000 rpm setup this may be a good cam but most guys with a 346 engine are running 22x/23x duration cams with a much lower intake centerline. 114 ICL seems pretty late, try something around 104-110 ICL would be much better for low end torque.



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