big duration low lift?
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big duration low lift?
Im in the works on a custom grind cam... I want a good duration like the big cams but I dont want the spring wear that comes with it...
I was thinking somthing like 231/237 560/563 +4 on a 112 lsa whats the pros and cons of this cam with the low lift and high duration?
I was thinking somthing like 231/237 560/563 +4 on a 112 lsa whats the pros and cons of this cam with the low lift and high duration?
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cool thanx... yeah Im running stock heads and if I do get heads its going to be the 5.3's...
I guess since Im going to run a small lift It would be better to go with a XE-R grind?
I guess since Im going to run a small lift It would be better to go with a XE-R grind?
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The car will make less power. Idle will be worse. P to V clearence will be almost exactly the same so no benifit there.
I say just buy a better spring and get all the benifits you can get.
I used a MTI cam before that was a 232/236 575/578 I believe.
Car ran good, and I was happy. Switched to a 224/228 581/588 and made VERY similar power. Peak came earlier, idel was noticeably better, and the car acturally ran better times at the track. I am not saying your idea is a bad idea just not something I myself would choose to do.
Good luck with it.
I say just buy a better spring and get all the benifits you can get.
I used a MTI cam before that was a 232/236 575/578 I believe.
Car ran good, and I was happy. Switched to a 224/228 581/588 and made VERY similar power. Peak came earlier, idel was noticeably better, and the car acturally ran better times at the track. I am not saying your idea is a bad idea just not something I myself would choose to do.
Good luck with it.
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Originally Posted by ArcticZ28
Even with lower lift cams, the XE-R lobes' inherent increased ramp rates will put additional strain on valve springs. Just letting you know since you're picking based on spring life.