Are Comp XR lobes still good?
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From: North Bay, Ontario
Are Comp XR lobes still good? I'm looking at a comp 228/230 .571/.573 on a 112LSA with their XR lobe...Is this grind still as good as the same cam but with XER lobes? Is this cam still a proven performer and will i make good low end power? Also what is the rpm range for this cam and where does power peek?
It's confusing because there's XE lobes and XE-R lobes. The XE-R's are more aggressive and a little harder on the springs IIRC. The XE lobes won't open the valves as fast because it's a less aggressive ramp rate, which will affect power under the curve.
Did I get it right, Predator?
Did I get it right, Predator?
Originally Posted by SSpdDmon
It's confusing because there's XE lobes and XE-R lobes. The XE-R's are more aggressive and a little harder on the springs IIRC. The XE lobes won't open the valves as fast because it's a less aggressive ramp rate, which will affect power under the curve.
Did I get it right, Predator?
Did I get it right, Predator?
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Thread Starter
TECH Fanatic
Joined: Jul 2006
Posts: 1,179
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From: North Bay, Ontario
Originally Posted by Alex @ CMS
My estimate would be 360 whp through a ls1 intake or 370-375 through an ls6, less if you have a big stall.
Great Tq from 3000-5500 rpm
Great Tq from 3000-5500 rpm
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Originally Posted by CAMAROZ28AQUINO
How will a TSP 228R on a 112 with XE-R lobes of course compare to this cam in terms of power and where it makes it? 228/228 .588/.588
You should check the dyno section, check the sponsor websites, etc. There are dyno sheets and numbers posted for many, many setups. I'm sure a little looking could answer a lot of these types of questions.
I have that exact cam that you are asking about. I really like it. It seems to have stock power down low and come on hard about 3k. I haven't got it dynoed yet but will this summer when the shop gets their dyno all set up. My mail order tune is getting me by but I think I will get alot more power yet after the real tune.
Originally Posted by CAMAROZ28AQUINO
^^ i read another post about you having trouble with pushrod length and ticking?
