Thread: comp magnum
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01-18-2006 06:06 PM #1
comp magnum
What does every 1 think about comp's magnum line of cams. I've heard good about them, just wandering what some of you had 2 say. Maybe some have had experience with them. Thanks
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01-18-2006 07:11 PM #2
My son ran one once. I believe it had equal lift and duration on both lobes. It performerd really well. Then he went more agressive, and he has been going slower ever since.Objects in my rear view mirror are a good thing unless,.... they have red and blue lights flashing.
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01-19-2006 06:22 AM #3
I like them. I had a Magnum 270 in a 350, and I presently have a Magnum 280 in my 383. You can run a little more compression with the Magnum cam than you can with the XE cams, and you don't get the clicking noise of the valves snapping shut that you get with the XE cams. Personally, I think they are easier on the valve train. On the Desktop Dyno, my engine with the XE274 made a little more hp from 3000 through 5000 rpm but the Magnum 280 cam surpassed it at 5500 rpm. You can't go wrong with the Magnum line of cams in my opinion.
Lynn
'32 3W
There's no 12 step program for stupid!
http://photo.net/photos/Lynn%20Johanson
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01-19-2006 06:58 AM #4
Re: comp magnum
Originally posted by <BLUECAMARO>
What does every 1 think about comp's magnum line of cams. I've heard good about them, just wandering what some of you had 2 say. Maybe some have had experience with them. Thanks
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01-19-2006 09:13 AM #5
Erik is correct about the symmetrical aspect. But if you run an aluminum head with the new chamber design (AFR, Canfield, etc.) you do not need an assymetrical cam.
Lynn
'32 3W
There's no 12 step program for stupid!
http://photo.net/photos/Lynn%20Johanson
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01-19-2006 10:38 AM #6
Originally posted by rumrumm
Erik is correct about the symmetrical aspect. But if you run an aluminum head with the new chamber design (AFR, Canfield, etc.) you do not need an assymetrical cam.
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01-22-2006 07:00 PM #7
ok Thanks
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01-22-2006 07:37 PM #8
Re: Re: comp magnum
Originally posted by erik erikson
Very few small block chevy heads can handle a symmetrical cam like this.I would look more towards the asymmetrical cam grinds.PLANET EARTH, INSANE ASYLUM FOR THE UNIVERSE.
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01-23-2006 09:19 AM #9
Originally posted by rumrumm
I like them. I had a Magnum 270 in a 350, and I presently have a Magnum 280 in my 383. You can run a little more compression with the Magnum cam than you can with the XE cams, and you don't get the clicking noise of the valves snapping shut that you get with the XE cams. Personally, I think they are easier on the valve train. On the Desktop Dyno, my engine with the XE274 made a little more hp from 3000 through 5000 rpm but the Magnum 280 cam surpassed it at 5500 rpm. You can't go wrong with the Magnum line of cams in my opinion.
I always used magnums and then I tried some of the new Extreme cams. I have gone back to the magnums.
Also..... most of the time I run aftermarket heads although one time I used some heads from a zz3 crate engine with a 280 magnum cam.78 malibu
86 corvette
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01-23-2006 11:10 AM #10
Originally posted by rumrumm
I like them. I had a Magnum 270 in a 350, and I presently have a Magnum 280 in my 383. You can run a little more compression with the Magnum cam than you can with the XE cams, and you don't get the clicking noise of the valves snapping shut that you get with the XE cams. Personally, I think they are easier on the valve train. On the Desktop Dyno, my engine with the XE274 made a little more hp from 3000 through 5000 rpm but the Magnum 280 cam surpassed it at 5500 rpm. You can't go wrong with the Magnum line of cams in my opinion.
Welcome to CHR. I think that you need to hook up your vacuum advance. At part throttle when cruising you have less air and fuel in each cylinder, and the air-fuel mixture is not as densely packed...
MSD 8360 distributor vacuum advance