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Anyone know the lobe center of the LT4 cam?

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Old Jan 21, 2002 | 05:05 PM
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Anyone know the lobe center of the LT4 cam?

I have the rest of the info like lift and dur@.050 and LSA. But I don't know the lobe center.
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Old Jan 21, 2002 | 05:52 PM
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111.9 .
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Old Jan 22, 2002 | 08:41 AM
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I heard that the lsa was the exact opposite of the one needed for a tpi.
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Old Jan 23, 2002 | 03:34 PM
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Yes, that is why everyone installs it 180 degrees out of phase. It works best that way.
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Old Jan 23, 2002 | 07:37 PM
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Re: Anyone know the lobe center of the LT4 cam?

Originally posted by V8Astro Captain
I have the rest of the info like lift and dur@.050 and LSA. But I don't know the lobe center.
The lobe center is the LSA. L-obe S-eperation A-ngle.

Are you asking about the intake centerline? That's the amount of degrees that the intake lobe centerline is in realation to TDC. It's measured in crankshaft degrees. A cam installed @ 108* intake centerline means that the lifter is at the center of the intake lobe at 108* ATDC on the intake stroke.

If that is what you're trying to find out, then it's a good question. I have never seen the int. cntrline posted on any GM cams, ever. It would help out if we could know that.

AJ
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