COMP. CAMS.ANY INPUT ON THEM,AND WHICH ONE?
06-25-2002, 11:39 PM
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Re: COMP. CAMS.ANY INPUT ON THEM,AND WHICH ONE? 1) ALL CAPS mean you're YELLING!!!
2) What kinda performance are ya looking to get outta yer cam/car? Comp can model a cam *almost* any way ya wanna go. They have literally hundreds of lobe profiles for the LS1 now.
3) What other mods have ya done to her, or are planning to do imminently or eventually? Port the heads (and how much) for example. What components the cam has to work with will have a huge effect on how the cam performs, or can be made to perform.
2) What kinda performance are ya looking to get outta yer cam/car? Comp can model a cam *almost* any way ya wanna go. They have literally hundreds of lobe profiles for the LS1 now.
3) What other mods have ya done to her, or are planning to do imminently or eventually? Port the heads (and how much) for example. What components the cam has to work with will have a huge effect on how the cam performs, or can be made to perform.
06-26-2002, 12:53 AM
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Re: COMP. CAMS.ANY INPUT ON THEM,AND WHICH ONE? thanks, i have 3500 tci converter,hooker cat back,3.73 rear,airlid,nos this week,and gmaf,160 term,hpp3 for now,free mods.
06-26-2002, 12:58 AM
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Re: COMP. CAMS.ANY INPUT ON THEM,AND WHICH ONE? i think the big thing now is... what kinda performance do you want? Do you want to make power all the way to 7000 RPM (meaning you plan on spinning the cam that high)
Are you going to do heads at the same time? if so which ones?
Do you ever plan on spraying or supercharging the car?
Are you going to do heads at the same time? if so which ones?
Do you ever plan on spraying or supercharging the car?
06-26-2002, 11:18 AM
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Re: COMP. CAMS.ANY INPUT ON THEM,AND WHICH ONE? go to ls1speed, check out there comp cam list(they have a little write up of what each would do for different setup's)
i went with the 224/224 .563 114 for NA and a little N20 usage(but i dont spray alot)
some say you need double valve springs for those Xtreme cams if you intend to rev high in the rpms, so im staying at 6400-6500 and running 918 springs
i went with the 224/224 .563 114 for NA and a little N20 usage(but i dont spray alot)
some say you need double valve springs for those Xtreme cams if you intend to rev high in the rpms, so im staying at 6400-6500 and running 918 springs
06-26-2002, 02:49 PM
#7
Re: COMP. CAMS.ANY INPUT ON THEM,AND WHICH ONE? I know this is going to sound generic to some of y'all since just about everyone is running one (including myself), but the 222-224 cams seem to be working very well for their size. They don't compromise drivability much, if at all, and the power gain is nice. With only a 100 shot of N2O, I would just choose your cam w/ out considering the power-adder. You don't need to mess with "nitrous cams" until you start getting into big shots (300+).
Comp offers the Extreme (XE) and XE-R profiles. The XE-R lobes are more aggressive and provide more lift. I'm running Comp's XE-R 224/224, .581"/.581", 112 LSA, and it's working GREAT. The performance gain is very nice, and drivability is excellent all around. I'm running the Comp 918 springs, 772 titanium retainers, and 7.4" hardened pushrods. I have about 1,000 miles on the setup so far, and they haven't been easy miles either! I have right at 15 passes on it at the track shifting at 6,800 RPM, and I have my fair share of WOT blasts on the street as well. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> Knock on wood, everything is doing great so far. I have my engine idling at 825 RPM in gear, and it sounds really nice. I don't have any problems with surging or bucking at that RPM (with the a/c off), and it has a nice lope to it. It really needs to be raised to 900-925 for an A4 car if you want to kick the a/c on and be surge-free. I'd rather have the lower idle to hear the cam personally. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> The XE-R lobes are going to be a tad more docile vs. the XE lobes as far as the idle is concerned because of the very aggressive ramps. The valve is able to spend more time on the seat because it opens and closes very quick vs. the XE lobes. This is also good for making HP, but it's at the expense of your valvetrain. The more aggressive lobes are going to be harder on your valvetrain, particularly your springs, so I'd recommend changing springs every year if you go with an XE-R grind. I'm going to test my springs at the end of this racing season to see how they're holding up w/ spring pressure. BTW, if you're looking to pass emissions, I wouldn't go bigger than 224 on duration @ .050", and I'd go with a 114 LSA.
<small>[ June 26, 2002, 02:51 PM: Message edited by: Trevor D ]</small>
Comp offers the Extreme (XE) and XE-R profiles. The XE-R lobes are more aggressive and provide more lift. I'm running Comp's XE-R 224/224, .581"/.581", 112 LSA, and it's working GREAT. The performance gain is very nice, and drivability is excellent all around. I'm running the Comp 918 springs, 772 titanium retainers, and 7.4" hardened pushrods. I have about 1,000 miles on the setup so far, and they haven't been easy miles either! I have right at 15 passes on it at the track shifting at 6,800 RPM, and I have my fair share of WOT blasts on the street as well. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> Knock on wood, everything is doing great so far. I have my engine idling at 825 RPM in gear, and it sounds really nice. I don't have any problems with surging or bucking at that RPM (with the a/c off), and it has a nice lope to it. It really needs to be raised to 900-925 for an A4 car if you want to kick the a/c on and be surge-free. I'd rather have the lower idle to hear the cam personally. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> The XE-R lobes are going to be a tad more docile vs. the XE lobes as far as the idle is concerned because of the very aggressive ramps. The valve is able to spend more time on the seat because it opens and closes very quick vs. the XE lobes. This is also good for making HP, but it's at the expense of your valvetrain. The more aggressive lobes are going to be harder on your valvetrain, particularly your springs, so I'd recommend changing springs every year if you go with an XE-R grind. I'm going to test my springs at the end of this racing season to see how they're holding up w/ spring pressure. BTW, if you're looking to pass emissions, I wouldn't go bigger than 224 on duration @ .050", and I'd go with a 114 LSA.
<small>[ June 26, 2002, 02:51 PM: Message edited by: Trevor D ]</small>
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06-26-2002, 06:54 PM
#8
On The Tree
Re: COMP. CAMS.ANY INPUT ON THEM,AND WHICH ONE? i have a comp 226/226 .570/.570 114 for sale in the classafieds that will make great power on stock heads, will not comprimise drivability, and will work great with nos.