[Formulajones]

Originally Posted by rohrt

I need to circle back to a previous question about if this cam has built in advance? If its on the cam card I'm not seeing it.
If it does, what is the purpose of built in advance and how does it related to degreeing the cam?

As for the other post. All great information on the math and double checking the degreeing process. I'm learning lot.



I would have no issue buying a Mellings cam but I wouldn't have any way to adjust it. And as with life my best option is also the most expensive. It does look like a nice chain and I know its the one that the Simms unit is based off.
https://butlerperformance.com/i-2445...timing%2Bchain


Given all that If my mearsurent is correct at 111.5
and if I move the crank sprocket to the strait up
I will be at 107.5 and thus just 1.5 deg off the mark
To me this seem more ideal as long as I don't get into a detonation issue.

The cam card will tell you if the camshaft has advance ground in it. For example if the LSA is 112, look at the ICL on the card. If it says 108 then the cam has 4 degrees of advance ground into the lobes. Theoretically if you just install the cam "straight up" dot to dot, it should have 4 degrees of advance, but that's not always the case. Keyways on cranks and camshafts are not always perfect, the cam is not always ground perfect, the keyways on the sprockets of the timing chain being used are not always perfect. All of these things can amount to "stacked tolerances" and really skew the intake centerline install position. That is why it's always wise to degree the camshaft and check. 9 out of 10 times the cam will not be where you think it should be. It's a time consuming process but it has to be done.

Advancing a little more is not a bad thing. There are a couple schools of thought on that as far as lobe position and detonation. I prefer and have had great success with Paul's method but that's another discussion and I don't know anything about your build.