Too much duration?
Thread Starter
12 Second Club
Joined: Dec 2008
Posts: 281
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From: A small town, MS
Too much duration? I've got an 04 sierra with a 5.3 with 241 heads shaved .050. Right now I'm running a 224/224 cam but I want to change to give myself more towing power. Everybody has told me to get a 212/218 cam to tow. So I been reading and I decided to spec my own cam. I came up with 212XE/220XER, .558/.581, 112 LSA, 108 ICL. I went with the XER on the exhaust for the agressiveness because I only have shorty headers. My question is, do you guys think that the exhaust duration is too much? Should I stick with 218 or will I be good with 220? Thanks in advance.
Thread Starter
12 Second Club
Joined: Dec 2008
Posts: 281
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From: A small town, MS
Thanks for the replies. I thought about the XFI lobe but unless I can get that lobe in less than .590 lift I really can't use it. My valve clearance will only clear .590, as far as I know.
TECH Resident
Joined: Sep 2009
Posts: 859
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From: Frozen Tundra, WI
I have this "Torque Monster" (per article) cam available if you are interested...Crane 1449551. It has zero miles/time on it. (Cam is sold)
http://www.hotrod.com/techarticles/e...camshafts.html
http://www.hotrod.com/techarticles/e...camshafts.html
Last edited by Paul57; Nov 27, 2011 at 12:34 AM.
Thread Starter
12 Second Club
Joined: Dec 2008
Posts: 281
Likes: 0
From: A small town, MS
Well my friend and I are gonna try to go together and get a couple cams, maybe at a discount we hope. But, what would be the advantage to the XFI lobe? Would a 206* .585 XFI work, or would that be getting too small?
Imo, if you want prolong the life of the valve train, and have it quieter then you could get the 220* with the xe lobes also.
Yeah I looked at the xfi 206, but I think it's to small. You'll be better off with the 212*xe lobe.
Yeah I looked at the xfi 206, but I think it's to small. You'll be better off with the 212*xe lobe.
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