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Cam questions *die horse*

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Old Feb 28, 2006 | 09:33 AM
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Default Cam questions *die horse*

What would be a well rounded cam for a LQ9?
This is going to be a DD, but I'd like to get all that I can out of it without losing too much driveablilty.
I've already got a TB and don't plan on shifting past 6500.

I was thinking about something in the range of 224-226 with 112* but then got lost on all the different companies and type of lobes, etc.

Why do some cams with the same duration and LSA show a power band of 2500-6500, while others show it to be 1500-6000.
Some also have a narrower band say 3500-6500 and others are wider like 1800-6500.

One more question; whats the advantage to have a single pattern duration like 224/224 verses a split pattern like 224/226?
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Old Mar 1, 2006 | 01:22 PM
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Old Mar 1, 2006 | 02:05 PM
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Why do some cams with the same duration and LSA show a power band of 2500-6500, while others show it to be 1500-6000.
Some also have a narrower band say 3500-6500 and others are wider like 1800-6500.
Who is to say when a powerband begins and ends?
If company A sells the exact same cam as company B, then they will have identical powerbands.

To the camshaft 'split' question... Start reading this. And then, reread it. After that, if you have any questions about what you read, post them here and I'll see if I can help.

Last edited by Sport Side; Mar 1, 2006 at 02:11 PM.
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Old Mar 1, 2006 | 03:48 PM
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Originally Posted by Sport Side
Who is to say when a powerband begins and ends?
If company A sells the exact same cam as company B, then they will have identical powerbands.

To the camshaft 'split' question... Start reading this. And then, reread it. After that, if you have any questions about what you read, post them here and I'll see if I can help.
Oh yeah sure Sport Side, go ahead and confuse me even more...

It sounds like the split cams tend to work better when you have a better flowing intake than exhaust. I'm sure my situation will be similar since I'm using a stock 6L head.
Then more I read the more I start thinking I might want something that will give me a nice broad torque curve for my heavy beast?
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Old Mar 1, 2006 | 03:57 PM
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a high lift 224 226 is what i would use 112 for that lope allen nelson had great success with that cam on a lq9
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Old Mar 1, 2006 | 04:12 PM
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Originally Posted by TXsilverado
a high lift 224 226 is what i would use 112 for that lope allen nelson had great success with that cam on a lq9
Been thinking about that one as well. I thought Allen used the 224/224 on the LQ9?
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Old Mar 1, 2006 | 05:03 PM
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he told me and jim(chevyvho6000) in person it was the 224/226
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Old Mar 1, 2006 | 06:18 PM
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Originally Posted by TXsilverado
a high lift 224 226 is what i would use 112 for that lope allen nelson had great success with that cam on a lq9

allen nelson just installed that cam on a friends truck, and he ran a 12.9, ECSB 2WD 6.0L 4.10's 3kstall, and it still has some more in it, allen said it should be a 12.5sec truck having he gets all the tweaks worked out on it..
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Old Mar 1, 2006 | 11:12 PM
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Does Allen have a dyno sheet of that truck posted anywhere yet?
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Old Mar 2, 2006 | 03:18 PM
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There you go.
Restrictive intake... Intake crutch (226/222)
Restrictive exhaust, exhaust crutch (222/228)

Good idea about the broad torque curve.
I have the same goals in mind.
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