cam question
Thread Starter
Pro
Joined: Aug 2008
Posts: 578
Likes: 15
From: Colorado Springs
cam question
Hey guys, I'm a newb when it comes to cam's...I'm thinking of having a cam package done to my LS7...the shop I'll probably go with has their own cam...the only specs I could find on their site are as follows:
DX7 - (LSx motors from 400 CID - 475 CID) - 23x/24x Duration at .640+/.630+ duration (1.7) 111 LSA (Not recommended for Blower Cars)
So, to all you cam guys...what would you consider this cam: "large/aggressive...mild...somewhere in between?"
I'm looking for a cam with no bucking or surging, mild to mod lope, and near stock driveability....also enjoy tq over high end hp...
Thanks.
DX7 - (LSx motors from 400 CID - 475 CID) - 23x/24x Duration at .640+/.630+ duration (1.7) 111 LSA (Not recommended for Blower Cars)
So, to all you cam guys...what would you consider this cam: "large/aggressive...mild...somewhere in between?"
I'm looking for a cam with no bucking or surging, mild to mod lope, and near stock driveability....also enjoy tq over high end hp...
Thanks.
Burning Brakes
Joined: Nov 2004
Posts: 848
Likes: 8
From: St. Louis Mo.
Lingenfelter GT-11. Drives like stock, with good low, great mid,good top end. No surging or bucking at all. Will lope some at 550-600rpm, but if 650-up, smooth as stock. Have mine setup to be smooth in gear(650), lope in park/neutral(550)
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
With your Z06, you can go a little bigger than the earlier suggestions, but the cam you're considering is probably too big if you don't want any driveability issues. I'd look for something in the high 220's low 230's with lift in the .610 range. 112LSA would give you the mean idle and good midrange pull.
Racer
Joined: Apr 2005
Posts: 351
Likes: 0
From: Louisville Kentucky
With your Z06, you can go a little bigger than the earlier suggestions, but the cam you're considering is probably too big if you don't want any driveability issues. I'd look for something in the high 220's low 230's with lift in the .610 range. 112LSA would give you the mean idle and good midrange pull.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
Yikes! I read LS7 as LS2. I agree with Old Motorhead. The cam you cited is still too much but the one I cited earlier may not be enough. I have a Crane Z Cam 228/232, 600/600, 112, +5 in my LS2 and it has very minor surging at 1650 with some decent lope at 975. It produces a lot of low-end with 6.0 liters. With 7.0 liters and this cam you'd be changing tires more frequently than oil and you should have near-stock drivability with a good tune. The extra liter would really take the edge off this cam's attitude. The next Z Cam up the scale is a 236/240. A good tuner might make this one meet your needs, though the tune would need to be really good. Comp has similar selections. You have a great problem! I must have 7.0 liter envy.
Safety Car
Joined: Nov 2007
Posts: 4,537
Likes: 1,404
From: Bethesda MD
Looking at the dyno graphs being posted around the web, you'll notice that most keep a pretty wide split, especially if the stock exhaust manifolds remain on the car. Something like a 224/236 115 to 228/240 115 might be in the range you are looking for. Several sponsors here have posted some nice results. Good luck in your selection.
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Race Director
Joined: Dec 2006
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From: Fort Worth, Texas
Looking at the dyno graphs being posted around the web, you'll notice that most keep a pretty wide split, especially if the stock exhaust manifolds remain on the car. Something like a 224/236 115 to 228/240 115 might be in the range you are looking for. Several sponsors here have posted some nice results. Good luck in your selection.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
Don't LS7's have 1.8 ratio rocker arms? Lift on the intake side of the OP's proposed cam would be .678. That would take some serious springs as well as possibly flycutting the pistons. Duration on both sides would also go up slightly vs advertised with the higher ratio rockers.
Safety Car
Joined: Nov 2007
Posts: 4,537
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From: Bethesda MD
Former Vendor
Joined: Feb 2004
Posts: 9,615
Likes: 13
From: Burlington NC
The LS7 has a 1.8 rocker. So the cam must be ground for this. We run a 224-234 with .640 lift on a 112-114 lsa. It idles good with some lope, pulls like a freight train, doesn't give the big RWHP numbers. But what the hell, when was the last time you have seen two chassis dynos racing.
Randy
Randy
Thread Starter
Pro
Joined: Aug 2008
Posts: 578
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From: Colorado Springs
Hey guys thanks for all the replies...the specs on the cam in my o.p. is from a local shop here in Colorado...I just lifted those numbers straight from their website...I'm not sure what else they have, but I'm sure they could probably work with me...anyway, here are a few cams I'm considering from CF sponsors...I spend most of my time over in the C6 Z06 section, so that's where I got most of my info from on these cams...what do you guys think of these based on what I've stated I'm looking for in a cam?
The QM550 street bully...no specs on this one but plenty of info over in the C6 Z06 section
vette-air.com
The Katech Torquer
Specs: 220 / 244 @ .050, .615 / .648 lift, 110 LSA +004
Either the Stalker or the Lethal cam
http://raginracin.com/LSX_Camshafts.php
The Livernois Stage 2 cam
http://www.livernoismotorsports.com/...7%3A+Camshafts
The QM550 street bully...no specs on this one but plenty of info over in the C6 Z06 section
vette-air.com
The Katech Torquer
Specs: 220 / 244 @ .050, .615 / .648 lift, 110 LSA +004
Either the Stalker or the Lethal cam
http://raginracin.com/LSX_Camshafts.php
The Livernois Stage 2 cam
http://www.livernoismotorsports.com/...7%3A+Camshafts
Drifting
Joined: Dec 2007
Posts: 1,609
Likes: 1
The LS7 has a 1.8 rocker. So the cam must be ground for this. We run a 224-234 with .640 lift on a 112-114 lsa. It idles good with some lope, pulls like a freight train, doesn't give the big RWHP numbers. But what the hell, when was the last time you have seen two chassis dynos racing.
Randy
Randy
Randy how would this cam work on an LS3?
Thread Starter
Pro
Joined: Aug 2008
Posts: 578
Likes: 15
From: Colorado Springs
If I had 7L to work with, that cam would be real close to what I'd want. I had a 232/234/600 on a 112 in my 6.2L that was a little too much. I heard that a good tuner could rid me of the cam surge. I tried two of Houston's best with no luck. I'd rather go a little lite on the cam than go a little too much and put up with driveablility issues. Too much gets you 10 extra HP that you see only over 6000 rpm.
Drifting
Joined: Jul 2003
Posts: 1,796
Likes: 1
From: Annandale VA
Hey guys thanks for all the replies...the specs on the cam in my o.p. is from a local shop here in Colorado...I just lifted those numbers straight from their website...I'm not sure what else they have, but I'm sure they could probably work with me...anyway, here are a few cams I'm considering from CF sponsors...I spend most of my time over in the C6 Z06 section, so that's where I got most of my info from on these cams...what do you guys think of these based on what I've stated I'm looking for in a cam?
The QM550 street bully...no specs on this one but plenty of info over in the C6 Z06 section
vette-air.com
The Katech Torquer
Specs: 220 / 244 @ .050, .615 / .648 lift, 110 LSA +004
Either the Stalker or the Lethal cam
http://raginracin.com/LSX_Camshafts.php
The Livernois Stage 2 cam
http://www.livernoismotorsports.com/...7%3A+Camshafts
The QM550 street bully...no specs on this one but plenty of info over in the C6 Z06 section
vette-air.com
The Katech Torquer
Specs: 220 / 244 @ .050, .615 / .648 lift, 110 LSA +004
Either the Stalker or the Lethal cam
http://raginracin.com/LSX_Camshafts.php
The Livernois Stage 2 cam
http://www.livernoismotorsports.com/...7%3A+Camshafts
Drifting
Joined: Dec 2007
Posts: 1,609
Likes: 1
If I had 7L to work with, that cam would be real close to what I'd want. I had a 232/234/600 on a 112 in my 6.2L that was a little too much. I heard that a good tuner could rid me of the cam surge. I tried two of Houston's best with no luck. I'd rather go a little lite on the cam than go a little too much and put up with driveablility issues. Too much gets you 10 extra HP that you see only over 6000 rpm.
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
It dynoed 465/420 tq thru 4.10's if memory serves. HP peak is around 6300. It lopes pretty good. There's no mistaking it for a stock cam. The 232/234 cam had a meaner idle, more issues, more torque, and less top end. Peaked at 458 at 6000 rpm. Torque was about 445 though. Current cam has very little surging or bucking, but you can notice a little on occasion (1600 to 1800 rpm against a gusty wind will induce a little buck). I have a dyno sheet somewhere, but my filing system for this type stuff isn't that great. I haven't run across it lately. If I find it, I'll send you a PM.