LPE cam or Comp Cams XFI cam?
05-22-2007, 11:10 AM
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LPE cam or Comp Cams XFI cam? I have stage 2 heads and all supporting mods on my 94 Z28. Which cam would give me more power; no worries about driving pleasure because the car only comes out on rare occasions.
Cam1:Comp Cams XFI LT1 Camshaft, 242 / 248, .584 / .579 113 LSA
Cam2: I just know the LSA is 114 and it is a little bit bigger than a CC306.
Current Cam:CC306
Website:http://www.fquick.com/jeffb
Cam1:Comp Cams XFI LT1 Camshaft, 242 / 248, .584 / .579 113 LSA
Cam2: I just know the LSA is 114 and it is a little bit bigger than a CC306.
Current Cam:CC306
Website:http://www.fquick.com/jeffb
05-22-2007, 12:04 PM
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Your probably mostly gonna hear "get a custom grind". Between those two cams, I can't say anything about the LPE cam. On the XFI 468, I have it in my 383 car, I must say it pulls like a mother...I havn't taken it to the track, but we G-tech it the other day and pulled a 11.88 on motor. I say not bad for a crappy set of heads, and a A4. I honestly think it works better on bigger displacement motors, some have quoted that it doesn't work well with stock cube applications. I hope this helps somewhat, but someone will sure be to quote on this thread. Good luck on discovering your new found power.
05-22-2007, 03:27 PM
#4
That XFI is a lot of duration for stock cubes, and will want to spin waaayyyy high.
How do your heads flow? I think you will have the same or better times with a grind with similar lift numbers but durations in the mid to late 230s, while being less of a dog down low and needing such a huge rpm clutch dump to get going. IMO you probably will not see much improvement in either one of those cams over your current 306 setup.
That is unless you have the bottom end(or faith) fit to spin ~6700+ rpms
How do your heads flow? I think you will have the same or better times with a grind with similar lift numbers but durations in the mid to late 230s, while being less of a dog down low and needing such a huge rpm clutch dump to get going. IMO you probably will not see much improvement in either one of those cams over your current 306 setup.
That is unless you have the bottom end(or faith) fit to spin ~6700+ rpms
05-22-2007, 09:45 PM
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The heads flow really well, the dude who ported them said the xfi cam would bring them alive a lot more than the cc306 but I just wanted some input on the two cams. The car ran a 12.1 on motor with cc306.
05-24-2007, 09:57 PM
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Originally Posted by Puck
That XFI is a lot of duration for stock cubes, and will want to spin waaayyyy high.
How do your heads flow? I think you will have the same or better times with a grind with similar lift numbers but durations in the mid to late 230s, while being less of a dog down low and needing such a huge rpm clutch dump to get going. IMO you probably will not see much improvement in either one of those cams over your current 306 setup.
That is unless you have the bottom end(or faith) fit to spin ~6700+ rpms
How do your heads flow? I think you will have the same or better times with a grind with similar lift numbers but durations in the mid to late 230s, while being less of a dog down low and needing such a huge rpm clutch dump to get going. IMO you probably will not see much improvement in either one of those cams over your current 306 setup.
That is unless you have the bottom end(or faith) fit to spin ~6700+ rpms
Check out the RPM range that the cam manufacturer provides for that cam. That should give you a good idea of where you're going to be. You already have the cc306, so I'm guessing you're not worried about spinning it high. The XFI cams actually have lower RPM ranges than most other cams their size. I can prove it with my dyno run. I have a 355 which is basically stock cubes. https://ls1tech.com/forums/lt1-lt4-modifications/705577-initial-dyno-375rwhp.html
For the cam, you're going to want less that 114 LSA unless you're going to spray a lot of nitrous. I have a custom xfi, but the bigger ones seem to do better in larger cube motors (383ci).
If I were you, and I may be soon, I'd really look at the Lunati Voodoo cams. They have high lift and a shorter LSA which should create more power even if it sacrifices some drivability.
Cam list: http://getonitracing.net/forum/viewtopic.php?t=376
Obviously to get the most out of your setup you should go custom, but why not save some money if you don't need that extra 10hp?
Last edited by seawolf06; 05-24-2007 at 10:09 PM.
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05-25-2007, 12:03 AM
#8
Originally Posted by seawolf06
THAT'S NOT TRUE! I don't know how many times I have to say it, but the advertised duration of a cam has little or NOTHING to do with the RPM range in which it operates.
Check out the RPM range that the cam manufacturer provides for that cam. That should give you a good idea of where you're going to be. You already have the cc306, so I'm guessing you're not worried about spinning it high. The XFI cams actually have lower RPM ranges than most other cams their size. I can prove it with my dyno run. I have a 355 which is basically stock cubes. https://ls1tech.com/forums/showthread.php?t=705577
For the cam, you're going to want less that 114 LSA unless you're going to spray a lot of nitrous. I have a custom xfi, but the bigger ones seem to do better in larger cube motors (383ci).
If I were you, and I may be soon, I'd really look at the Lunati Voodoo cams. They have high lift and a shorter LSA which should create more power even if it sacrifices some drivability.
Cam list: http://getonitracing.net/forum/viewtopic.php?t=376
Obviously to get the most out of your setup you should go custom, but why not save some money if you don't need that extra 10hp?
Check out the RPM range that the cam manufacturer provides for that cam. That should give you a good idea of where you're going to be. You already have the cc306, so I'm guessing you're not worried about spinning it high. The XFI cams actually have lower RPM ranges than most other cams their size. I can prove it with my dyno run. I have a 355 which is basically stock cubes. https://ls1tech.com/forums/showthread.php?t=705577
For the cam, you're going to want less that 114 LSA unless you're going to spray a lot of nitrous. I have a custom xfi, but the bigger ones seem to do better in larger cube motors (383ci).
If I were you, and I may be soon, I'd really look at the Lunati Voodoo cams. They have high lift and a shorter LSA which should create more power even if it sacrifices some drivability.
Cam list: http://getonitracing.net/forum/viewtopic.php?t=376
Obviously to get the most out of your setup you should go custom, but why not save some money if you don't need that extra 10hp?
05-25-2007, 10:52 AM
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Well, mine is pretty much dead on, so I don't know what to say to that. The dyno graph shows it, albeit the numbers are low since the car wasn't running at optimum, but that won't change the RPM range. If you run those cams in a stroker, which they seemed to be designed for, then you'll get even lower ranges. Just cause they're not a Lloyd Elliot or Bret Bauer doesn't mean they're morons. 
05-25-2007, 01:36 PM
#10
Originally Posted by seawolf06
THAT'S NOT TRUE! I don't know how many times I have to say it, but the advertised duration of a cam has little or NOTHING to do with the RPM range in which it operates.
Check out the RPM range that the cam manufacturer provides for that cam. That should give you a good idea of where you're going to be. You already have the cc306, so I'm guessing you're not worried about spinning it high. The XFI cams actually have lower RPM ranges than most other cams their size. I can prove it with my dyno run. I have a 355 which is basically stock cubes. https://ls1tech.com/forums/showthread.php?t=705577
For the cam, you're going to want less that 114 LSA unless you're going to spray a lot of nitrous. I have a custom xfi, but the bigger ones seem to do better in larger cube motors (383ci).
If I were you, and I may be soon, I'd really look at the Lunati Voodoo cams. They have high lift and a shorter LSA which should create more power even if it sacrifices some drivability.
Cam list: http://getonitracing.net/forum/viewtopic.php?t=376
Obviously to get the most out of your setup you should go custom, but why not save some money if you don't need that extra 10hp?
Check out the RPM range that the cam manufacturer provides for that cam. That should give you a good idea of where you're going to be. You already have the cc306, so I'm guessing you're not worried about spinning it high. The XFI cams actually have lower RPM ranges than most other cams their size. I can prove it with my dyno run. I have a 355 which is basically stock cubes. https://ls1tech.com/forums/showthread.php?t=705577
For the cam, you're going to want less that 114 LSA unless you're going to spray a lot of nitrous. I have a custom xfi, but the bigger ones seem to do better in larger cube motors (383ci).
If I were you, and I may be soon, I'd really look at the Lunati Voodoo cams. They have high lift and a shorter LSA which should create more power even if it sacrifices some drivability.
Cam list: http://getonitracing.net/forum/viewtopic.php?t=376
Obviously to get the most out of your setup you should go custom, but why not save some money if you don't need that extra 10hp?
Everyone knows(or at least I thought they did...) that the advertised rpm ranges for most lt1 cams - Comp especially - are way off. Most likely they assume stock heads, and most builds peak a fair bit later then advertised.
XFI is not some magical cam that is exempt from this, comp rpm ratings are low...cc306 peaking at 5800 rpms??? Lmao, maybe on some garbage flowing 1985 stock sbc heads. Install one in an lt1 and only spin to 5800 and see how fast you run
BTW go 110 lsa. No reason to sacrifice NA power going numerically higher when lsa has little effect on nitrous unless you are spraying huge shots. Most "Nitrous Grind" cams are sales gimmicks and perform worst then a good old 110-112 lsa cam.
Last edited by Puck; 05-25-2007 at 01:44 PM.
06-12-2007, 08:10 AM
#11
I would go with a the XFI high lift Cam. Thats just me? I have walked many with my cam. It has a 114 lobe and .584 lift. but be careful. if you want this cam to wok properly, better have a set of heads that cam flow ahnd a hell of a tuner. I am living proof what a stock cube motor can do. Not stock anymore. but in the end. LE all the way. Peak power made at 6400 rpms with my XFI cam.
06-12-2007, 03:30 PM
#13
The LPE 219/219 .560"/.560" would be great in your set up...Its on a 112 lsa and would be a great street/strip cam with good drivability and great power to 6300ish which wouldn't be very hard on your bottom end...I'm a big fan of bigger lifts with shorter durations...Hell I run a 22X/23X with .568" lift in my 383 which everyone said was wayyy too small, but my track numbers and 20 mpg on the highway speak for themselves...Most go too big and then wonder why they see tail lights...
--Alan
--Alan
06-12-2007, 04:10 PM
#14
Originally Posted by ABA383
The LPE 219/219 .560"/.560" would be great in your set up...Its on a 112 lsa and would be a great street/strip cam with good drivability and great power to 6300ish which wouldn't be very hard on your bottom end...I'm a big fan of bigger lifts with shorter durations...Hell I run a 22X/23X with .568" lift in my 383 which everyone said was wayyy too small, but my track numbers and 20 mpg on the highway speak for themselves...Most go too big and then wonder why they see tail lights...
--Alan
--Alan
Bigger is not always better!!!
