Effect on different LSA and ADV. ground into the cam?
Thread Starter
Joined: Nov 2001
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From: Delray Beach, Fl.
Effect on different LSA and ADV. ground into the cam? I was always under the impression a cam ground on a
114 would peak higher than a 112 given the sam specs,and advance ground into them?
So assuming u have 2 cams:
224-224 546-546 114 +4
224-224 546-546 112 +4
Where do u think these cam would PEAK?
Now what if u grind the 112 with +2 advance?
Where would that peak?
JS
114 would peak higher than a 112 given the sam specs,and advance ground into them?
So assuming u have 2 cams:
224-224 546-546 114 +4
224-224 546-546 112 +4
Where do u think these cam would PEAK?
Now what if u grind the 112 with +2 advance?
Where would that peak?
JS
Re: Effect on different LSA and ADV. ground into the cam? +4 is to offset high LSA and to build up midrange torque.
I think in some cases the 108icl is stuff is too low because you end up making sick midrange but the cars peak at 6200.
I think in some cases the 108icl is stuff is too low because you end up making sick midrange but the cars peak at 6200.
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From: Salisbury, Md
Re: Effect on different LSA and ADV. ground into the cam? More advance (i.e. lower intake centerline {ICL} equals more low end power with sacrifice of topend and visa versa for less advance.
Tighter lsa (i.e. lower number) equals a powerband which comes on later but will make more peak power and torque and often times make more power under the curve.
Most people get confused and site the lower lsa as the reason a cam peaks sooner but it is really the earlier intake closing point that makes the power come on sooner and fall off sooner.
Tighter lsa (i.e. lower number) equals a powerband which comes on later but will make more peak power and torque and often times make more power under the curve.
Most people get confused and site the lower lsa as the reason a cam peaks sooner but it is really the earlier intake closing point that makes the power come on sooner and fall off sooner.
I can shift faster than you.
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From: Baton Rouge, LA
Re: Effect on different LSA and ADV. ground into the cam? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by DailyAluminumBlock:
<strong> Most people get confused and site the lower lsa as the reason a cam peaks sooner but it is really the earlier intake closing point that makes the power come on sooner and fall off sooner. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Exactly!! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
<strong> Most people get confused and site the lower lsa as the reason a cam peaks sooner but it is really the earlier intake closing point that makes the power come on sooner and fall off sooner. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Exactly!! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Thread Starter
Joined: Nov 2001
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From: Delray Beach, Fl.
Re: Effect on different LSA and ADV. ground into the cam? Thats interesting stuff guys.
Looks like a 224-224 546-546 112+2 would be good for what I wanna do?I think this will get me the 6100 to 6200 PEAK I'm looking for and make KILLER TQ in the area under the curve and keep it broad to 5000...
Now should I run a XE-R lobe or a XE lobe?I know if I do the XE-R I'll need to discard the 02 LS6 springs for the 918,but what about the XE lobe?Could I run this cam spec (224-546) with the 02 LS6ers and if I can how much would I be given up as far as HP/TQ?
JS
<small>[ March 16, 2003, 07:38 PM: Message edited by: JS ]</small>
Looks like a 224-224 546-546 112+2 would be good for what I wanna do?I think this will get me the 6100 to 6200 PEAK I'm looking for and make KILLER TQ in the area under the curve and keep it broad to 5000...
Now should I run a XE-R lobe or a XE lobe?I know if I do the XE-R I'll need to discard the 02 LS6 springs for the 918,but what about the XE lobe?Could I run this cam spec (224-546) with the 02 LS6ers and if I can how much would I be given up as far as HP/TQ?
JS
<small>[ March 16, 2003, 07:38 PM: Message edited by: JS ]</small>
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From: Salisbury, Md
Re: Effect on different LSA and ADV. ground into the cam? The xe-r lobe would offer minimal gain on stock heads I would guess. Your looking at .560ish (xe) vs .581 (xe-r). Now on ported heads, especially ls6 with better high lift numbers, the xe-r might be worth a lot more.
I can shift faster than you.
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From: Baton Rouge, LA
Re: Effect on different LSA and ADV. ground into the cam? JS, why chance it? Valvesprings are not the place to skimp on. The 918 is a much better spring. I would use it regardless.
Jason
Jason
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Thread Starter
Joined: Nov 2001
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From: Delray Beach, Fl.
Re: Effect on different LSA and ADV. ground into the cam? Daily aluminum,I'm gonna run these specs:
224-224 546-546 112+2
I guess u feel the XE-R isnt needed then?This would be a custom grind done by Comp.My LS6 heads are STOCK,no porting whatsoever.
So where do u think this cam will peak?
Jason I think your right,I'm gonna run either the Nextek
or the 918 with Ti retainer just to be safe.
Calling Comp tomorrow...
JS
<small>[ March 16, 2003, 07:50 PM: Message edited by: JS ]</small>
224-224 546-546 112+2
I guess u feel the XE-R isnt needed then?This would be a custom grind done by Comp.My LS6 heads are STOCK,no porting whatsoever.
So where do u think this cam will peak?
Jason I think your right,I'm gonna run either the Nextek
or the 918 with Ti retainer just to be safe.
Calling Comp tomorrow...
JS
<small>[ March 16, 2003, 07:50 PM: Message edited by: JS ]</small>
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Verdad Gallardo TECH Apprentice
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From: Salisbury, Md
Re: Effect on different LSA and ADV. ground into the cam? I would without a question run more lift on ls6 heads. Are you worried about longevity problems? I don't think you'll have any issues with the 918s until you get .585+. I tried to have my 565/565 224/224 110lsa 106icl cam ground on the xe-r lobe and they told me they would. Guess what, they didn't because I verified it through the grind numbers. If you don't specify something over the .581 number then I think they will give you an xe. If I was you I would honestly consider the thunder 224 with you specs except for the lift. The thunder 224 has more area under the lift curve from what I have been told (i.e. it is on an xe-r lobe without the higher lift).
Thread Starter
Joined: Nov 2001
Posts: 7,303
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From: Delray Beach, Fl.
Re: Effect on different LSA and ADV. ground into the cam? Daily Alum,U think Comp will scew me huh,if I specify an XER lobe? Say a 224-224 546 -546 112+2
How much more lift do u think I should run with the stock 02 LS6 heads and lighter valves?I would think 546 should me fine especailly for a 6400 max shift point?
Looks like u are pushing me into the TR cam <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
I ran it once,its an awesome cam but I didnt think losing .15 of lift would really hurt me that much?
I'm gonna call COMP in the morning...
Who knows I might call Paul at TR too.
Thanks for the help..
JS
<small>[ March 16, 2003, 08:29 PM: Message edited by: JS ]</small>
How much more lift do u think I should run with the stock 02 LS6 heads and lighter valves?I would think 546 should me fine especailly for a 6400 max shift point?
Looks like u are pushing me into the TR cam <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
I ran it once,its an awesome cam but I didnt think losing .15 of lift would really hurt me that much?
I'm gonna call COMP in the morning...
Who knows I might call Paul at TR too.
Thanks for the help..
JS
<small>[ March 16, 2003, 08:29 PM: Message edited by: JS ]</small>