LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

How To Check Degree of Cam (Searched)

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Old Aug 2, 2005 | 03:45 PM
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How To Check Degree of Cam (Searched)

I will be recieving my LE AFR heads, and my Bauer cam soon, and wanted to double check the degreeing of the camshaft, to make sure everything is acurate. The heads are off the engine. Can anyone please be kind enough to explain to me how this is done. I already have the degree wheel, and the dial indicator. Thank You for your time.
Old Aug 2, 2005 | 04:17 PM
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Re: How To Check Degree of Cam (Searched)

There is a good explanation in the Comp Cams catalog which you can view on-line at www.compcams.com

Rich
Old Aug 3, 2005 | 11:00 PM
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Re: How To Check Degree of Cam (Searched)

does anyone happen to know where I can get a detailed instructions of how to do this with the heads off the car?
Old Aug 4, 2005 | 11:53 AM
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Re: How To Check Degree of Cam (Searched)

can anyone please help?
Old Aug 4, 2005 | 02:07 PM
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Re: How To Check Degree of Cam (Searched)

You must use the dedicated piston stop for when the heads are off. Turn the engine both ways to acuretly determine TDC. Here is the link from comp:
http://www.compcams.com/Technical/Cu...ML/413-414.asp
Old Aug 4, 2005 | 03:17 PM
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Re: How To Check Degree of Cam (Searched)

I don't think he's a good listener??

Rich
Old Aug 5, 2005 | 07:05 PM
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Re: How To Check Degree of Cam (Searched)

Originally Posted by sssalah
You must use the dedicated piston stop for when the heads are off. Turn the engine both ways to acurrately determine TDC. Here is the link from comp:
http://www.compcams.com/Technical/Cu...ML/413-414.asp
Hmmm. Must? I haven't EVER used a dedicated piston stop when degreeing in a cam. I'm an indicator kinda guy. If you got that from the CC site, there are also other statements made on that site I question.
Old Aug 6, 2005 | 01:52 AM
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Re: How To Check Degree of Cam (Searched)

Originally Posted by arnie
Hmmm. Must? I haven't EVER used a dedicated piston stop when degreeing in a cam. I'm an indicator kinda guy. If you got that from the CC site, there are also other statements made on that site I question.
No sir, got that from comps’ instruction when I had to degree a friends cam years ago. I understand it’s possible to do it with a dial indicator, but it’s simpler and more accurate for a first timer and for myself (I’ve only done about 8) to use a stopper.
Old Aug 6, 2005 | 07:33 AM
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Re: How To Check Degree of Cam (Searched)

There's lots of ways to degree a cam. There is probably no single "best" way. In my own field, there are many procedures that may be performed using a number of different techniques. People tend to do any task like that best (fewest errors and complications, more quickly) when they follow the method they are personally most familiar with rather than the "best" technique.

So, whatever way works best for you is the best way.

Rich
Old Aug 6, 2005 | 07:53 AM
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Re: How To Check Degree of Cam (Searched)

Originally Posted by sssalah
You must use the dedicated piston stop for when the heads are off.
Originally Posted by sssalah
No sir...
????
Just noting the above statement is false. You don't have to "must use" anything. In regards to technique, there are those that will question the utmost accuracy of any method that requires the crank to be turned in both directions. There is also the possibility of applying more force than necessary to the piston against a stop. I'm not stating it is not an adequate method. When used with care, it can be acceptably accurate. I agree with Rich. Important to use whatever method you are more comfortable with.

Last edited by arnie; Aug 6, 2005 at 09:38 AM.
Old Aug 7, 2005 | 09:22 AM
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Re: How To Check Degree of Cam (Searched)

Originally Posted by arnie
????
Just noting the above statement is false. You don't have to "must use" anything. In regards to technique, there are those that will question the utmost accuracy of any method that requires the crank to be turned in both directions. There is also the possibility of applying more force than necessary to the piston against a stop. I'm not stating it is not an adequate method. When used with care, it can be acceptably accurate. I agree with Rich. Important to use whatever method you are more comfortable with.
...and, of course, if Arnie is not comfortable with something, he will let you know...


j/k, bud
Old Aug 9, 2005 | 06:44 PM
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Re: How To Check Degree of Cam (Searched)

I checked the cam degree as follows.

1. Set #1 piston TDC, with the dial indicator.
2. Set pointer to TDC on degree wheel.
3. Turn motor counter clockwise to max lift.
4. Set dial indicator to ZERO. Turn motor counter clockwise .70 to .80, then clockwise to .50, and write down number.
5. Then turned motor clockwise to zero (MAX LIFT) and clockwise to .50 and took that number.
6. Add both numbers and divided by two to get the ICL.

Correct?
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