NEW Comp Cam LSR specs!!! come in!!

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Jan 6, 2010 | 04:03 PM

#11

charcoal03silvy

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From: South OKC/ Moore, OKlahoma

Quote:

Originally Posted by ap2002

nice grinds, but looks like most grinds are meant to be used with aftermarket/worked heads to take advantage of it...

I'm quoting this from another site, again, not my words

Quote:

I wonder why rectangular ports like big duration splits and equal in and ex lifts??

easy answerd. those heads have a flow number ppl think is well but are actually inefficent. they use stock 2.18 valves with a 245cc runner and flow 330 stock on intake. use 1.6 exhaust with a smaller exhaust runner and poor exhaust flow.

ppl look at the 330 and think they are great heads, fact is the air is actually moving slowly and dont have the velocity as you would with a smaller cc runner and smaller intake valve. so some say they need huge spilts to make the lack of velocity work for them.

designers have gotten it to work best this way where as the catheral port heads flow closer in intake/exhaust and can use a much closer split or even single pattern cam.

Jan 6, 2010 | 04:45 PM

#12

Mangled03gmc

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From: In a van DOWN BY THE RIVER

I wonder what the life time of the springs, valve train is going to be with a even more aggres lobe then a XFI lobe..

Jan 6, 2010 | 04:49 PM

#13

BlackGMC

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From: Fort Worth - TX

I have about 10k on my cam, and i shift pretty high, and i don't have any problems... But i have dual springs rated to .650...

Jan 6, 2010 | 04:51 PM

#14

Mangled03gmc

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From: In a van DOWN BY THE RIVER

Corey are you running a XFI lobe??

Jan 6, 2010 | 04:53 PM

#15

BlackGMC

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From: Fort Worth - TX

Quote:

Originally Posted by Mangled03gmc

Corey are you running a XFI lobe??

Mine is a special FTI Lobes.... which is similar to XFI or LSR lobes... They are asymmetrical lobes if i recall correctly... It is a comp cam, but the lobes are only available to FTI, i believe, i may be wrong....

Jan 6, 2010 | 04:55 PM

#16

corvette_uae1

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im curious any one install this 210/224 .556/.568 114LSA cam?? cuz i order it already any dyno numbers or reviews?

Jan 6, 2010 | 06:06 PM

#17

terravast4

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From: Austin, TX

That is a lot of lift on those 4.8-5.3 cams

Jan 6, 2010 | 06:07 PM

#18

charcoal03silvy

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From: South OKC/ Moore, OKlahoma

Quote:

Originally Posted by terravast4

That is a lot of lift on those 4.8-5.3 cams

read my previous post

Jan 6, 2010 | 09:42 PM

#19

MFIC

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From: Reno NV

Well I think I going to try one either the centri blower cam or the rectangle port 400+ci cam. I have 72cc PRC L92/LS3 heads with stainless valves on my 408 9.25:1 with 15psi procharger. I dont see why my PRC Dual Springs would not work there good to .660 lift and are 390lb open otherwise let me know. I currently have a Texas Speed & Performance 233/239 .595/.603, 112 LSA. It just seems like these cams are monsters my cam/vic JR intake/low CR and 3600rpm stall already make my truck a slug under 3000 Im sure it cant get much worse.

243/259 .624/.624 116LSA
Best cam for high rpm power in race application when using a centrifugal blower.
3000-7200 RPM

247/263 .624/.624 114LSA
2400-7000rpm
400+ci high rpm applications with major modifications and rectangular port cylinder heads