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Need help to Identify Cam

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Old 08-19-2007, 11:17 PM
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Default Need help to Identify Cam

I've read the Cam help guide but still can't work this out.
I am familiar with numbers like 218/224 @ 114....0.579.. etc

Can somebody please convert the numbers in the .jpg below into something like above ???

I know the valve lifts are lobe lifts x 1.7.......so that's 0.5559INT & 0.5593EXH
The LSA I believe to be about 117.

So far I've got -----> xxx/yyy @ 117.........0.556, 0.559


Old 08-19-2007, 11:30 PM
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Duration (I/E): 184/189
Lift w/ 1.7 (I/E): .555/.559

I don't know how to figure out the LSA though

so it would probably look like this: 184/189 .555/.559 on a 11x LSA

Really small duration BTW, what's it for?
Old 08-20-2007, 12:04 AM
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Originally Posted by z28ss4me
Duration (I/E): 184/189
Lift w/ 1.7 (I/E): .555/.559
I don't know how to figure out the LSA though
so it would probably look like this: 184/189 .555/.559 on a 11x LSA
Really small duration BTW, what's it for?
That .jpg was taken from the Car manufacturers manual (I think they made mistakes with duration). It's from a heads and cam LS1 from a few years ago that was stock at 400 fwhp.
They've tried to keep the cam specs a secret.

Some guy measured one and came up with
212/222---.560/.569 @ 116.9
But lots of people disagree.

Stamped on the end of the cam is 2871A




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