Torquer LS7 CAM
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Instructor
Joined: Aug 2009
Posts: 158
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Torquer LS7 CAM
I have an 08 z06 with a Katech Stage 1. I was wanting to put a supercharger on the car. I am being told that the cam will not work. Can the Torquer LS7 cam be used in a supercharged set up?
Racer
Joined: Jan 2006
Posts: 399
Likes: 1
From: Jasper, GA
St. Jude Donor '10
Not an expert on this, but lift, duration, ramp all come into play. The Torquer cam I think has some healthy lift and split, not sure about running with a S/C application. You can got to the FI section and may get additional info. Although I'm guessing folks have run this cam; however, Katech has had this cam for a while and knows the setup, drivability, and specs. I would most likely go with their recommendation. I will say you got one heck of a cam right now, that baby makes some super torque, hence the name. Good luck. I'm sure some of the experts will chime and provide some better guidance.
Mike C sends
Mike C sends
Burning Brakes
Joined: Jul 2008
Posts: 754
Likes: 3
From: port Orange FL
I have the LS9 cam in a LS3 417. It is a great cam for FI. Check out the torque and idles like stock. 779/808
http://www.youtube.com/watch?v=EUeTlBF62Cw
http://www.youtube.com/watch?v=EUeTlBF62Cw
Racer
Joined: Jan 2006
Posts: 399
Likes: 1
From: Jasper, GA
St. Jude Donor '10
Roger that, we all want that . . . other folks to talk to are A&A and ECS, both specialize in S/Cs. Your cam is super on the H/C side, I would be a little worried on the S/C side, low LSA, 220/244 @ .050, .615/.648 lift 110LSA. A 427 with a TVS 2300 shouldn't have much problem of hitting your RWHP mark with a 220ish/230ish cam and lower lift. Your S/C is going to give you tremendous torque even with the small cam and a smaller split. Again, this is only what I've read about and noticed. By tomorrow, someone, Spin, Jason, Andy, or Mike, with the S/C smarts will give you a better recommendation than me based on true experience. Again, good luck, and for a great combo on your Z06 already.
Mike C sends
for a great combo on your Z06 already.Mike C sends
Premium Supporting Vendor
Joined: Oct 2005
Posts: 13,975
Likes: 980
From: Clinton Township MI
C7 of Year Finalist (track prepared) 2019
The Torquer cam is not ideal for a supercharged application. We've never tested it, but we would have no reason to because it's got more overlap than we would want for a supercharged application.
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Melting Slicks
Joined: Feb 2004
Posts: 3,307
Likes: 111
From: Tucson AZ
Jason is the man!
What Jason means is that on a normally aspirated engine we increase overlap (time when both the intake and exhaust valves are open) to act as an artificial supercharging effect better filling the cylinder. With a blower you are forcing the air into the engine intake under pressure and we do not need as much overlap. We usually would like to see an increase in exhaust lift/duration to complement the supercharger on the intake side.
Your motor will run with this cam and a supercharger, but it will not be optimum. But, remember, we are always compromising in this game!
What Jason means is that on a normally aspirated engine we increase overlap (time when both the intake and exhaust valves are open) to act as an artificial supercharging effect better filling the cylinder. With a blower you are forcing the air into the engine intake under pressure and we do not need as much overlap. We usually would like to see an increase in exhaust lift/duration to complement the supercharger on the intake side.
Your motor will run with this cam and a supercharger, but it will not be optimum. But, remember, we are always compromising in this game!
Melting Slicks
Joined: May 2000
Posts: 2,161
Likes: 17
Vito got it right...a cam in a non-aspirated application is meant to have a different purpose than in a blown application. Blower cams need less overlap (so boost doesn't come in and bleed out while both intake and exhaust valves are open). A smaller cam will have more torque and power in the low rpm range where the blower doesn't have as much boost and as the rpm's go up, the boost will creat the power and the cam won't be as much of an issue. I have done lots of research and I'd probably go with a 230/240 115 or 116 LSA with about .640 lift (w/1.8 rockers). This will be enough cam and will complement your blower perfectly....
Most people make the mistake of going with huge cams because they look at peak numbers. They don't understand that a smaller cam will make more power everywhere else on the graph (under peak RPM) and that is what you feel when you drive on the street...
Most people make the mistake of going with huge cams because they look at peak numbers. They don't understand that a smaller cam will make more power everywhere else on the graph (under peak RPM) and that is what you feel when you drive on the street...
