[TAQuest]

Originally Posted by Steve C.

"Just post some cams and say what you think the advantage of them would be"

I'm NOT a guy sitting in a work cubicle answering the phone ! And besides some of those calculators ask for the bore, stroke, where the inlet valve closes in degrees, etc.... and drum roll... the static compression ratio ! Do you know yours ?


Not a recommendation, but for conversation..... go run the specs for the popular Crower 60243 cam used in quite a few 400's. Then compare it to yours with your engine combination.


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As compared with the 2157, how much less compression would I have using the 60243? 400 cid. Stock bore and deck height. 72 cc heads. Fresh compression test; 170 No signs or detonation on the plugs.

[Formulajones]

It's going to depend on where each particular cams ICL is installed, but since you don't degree them no one can even begin to answer that question.

[TAQuest]

Originally Posted by Formulajones

It's going to depend on where each particular cams ICL is installed, but since you don't degree them no one can even begin to answer that question.

I didn't install it retarded or advanced. Used the standard marking. Verified TDC first.

[Formulajones]

Originally Posted by TAQuest

I didn't install it retarded or advanced. Used the standard marking. Verified TDC first.

Right, which in no way guarantees the cam is installed where the manufacture recommends. With keyways off slightly on any number of parts (crank/cam/cam sprocket/crank sprocket) Dot to dot does not mean the cam is where it should be.

Without checking your cam installed dot to dot, we have no way of knowing how far advanced or retarded it actually might be, we have no ICL reading for a reference point. So installing another cam and then trying to figure out what that will do to the cranking compression, again not knowing where the ICL is, is just a guessing game.

Bunch of us went over this in your other cam thread but you didn't want to degree it.

[TAQuest]

Originally Posted by Formulajones

Right, which in no way guarantees the cam is installed where the manufacture recommends. With keyways off slightly on any number of parts (crank/cam/cam sprocket/crank sprocket) Dot to dot does not mean the cam is where it should be.

Without checking your cam installed dot to dot, we have no way of knowing how far advanced or retarded it actually might be, we have no ICL reading for a reference point. So installing another cam and then trying to figure out what that will do to the cranking compression, again not knowing where the ICL is, is just a guessing game.

Bunch of us went over this in your other cam thread but you didn't want to degree it.

Why can't you just compare two cams and figure out the difference if both are installed as the manufacturer recs?
It seems to me you are just dragging your feet. Looking for reasons to crawl off the job. Just being negative.

[Formulajones]

Originally Posted by TAQuest

Why can't you just compare two cams and figure out the difference if both are installed as the manufacturer recs?
It seems to me you are just dragging your feet. Looking for reasons to crawl off the job. Just being negative.

You can compare them that way if you want, but it's not going to give you exact results in your situation because you simply won't degree them.

On paper you can compare all you want, but unless you install them exactly how they are presented on paper, you won't have the results the papers suggest. Then you're going to blame people here for misleading you, when in fact it's not that at all.

Make sense now? No one is dragging their feet and being negative, you just simply won't listen. None of it matters at all if you don't know where you're putting the ICL on these cams.

[Steve C.]

TAQuest.... Sir, if you took my mention of that specific Crower cam as a recommendation you are correct. Not the best of choice. But my intention was to use it as an example to change the seat duration (advertised duration) and/or lobe separation on the computers and note how it effects the effective compression ratio, dynamic compression ratio, cranking compression.

Onward.


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[TAQuest]

Originally Posted by Formulajones

You can compare them that way if you want, but it's not going to give you exact results in your situation because you simply won't degree them.

On paper you can compare all you want, but unless you install them exactly how they are presented on paper, you won't have the results the papers suggest. Then you're going to blame people here for misleading you, when in fact it's not that at all.

Make sense now? No one is dragging their feet and being negative, you just simply won't listen. None of it matters at all if you don't know where you're putting the ICL on these cams.

You claimed a different smooth idle cam would lower my compression.
Name one.

[Steve C.]

Stated.... Steve C kept telling me, and I quote, "All is not well with these heads".

I don't recall the specific reason why I made that statement. And there has been the mention of recommendations by Edelbrock. But as mentioned before, and not just by me, just because a salesman suggests something does not make it always optimum. As an example, read my post number 6 in this thread:

https://forums.maxperformanceinc.com...d.php?t=830136

Now consider this... a set of Edelbrock heads in conjunction with the 0.420" valve lift on the 2157 cam with their single coil valve springs at 1.800" installed height. In theory at max lift it would be 0.250" away from coil bind ! Not suggesting you have a issue, but it's damn well not optimum.

What would the salesman in the cubicle say ?



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[Steve C.]

I stated... "Not a recommendation, but for conversation"

I only used that Crower cam as an example for use with the calculators, that's all.

And NEVER use a catalog description of a cam. I've seen Cliff say that as well.

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[TAQuest]

Originally Posted by Steve C.

I stated... "Not a recommendation, but for conversation"

I only used that as an example for use with the calculators, that's all.

And NEVER use a catalog description of a cam. I've seen Cliff say that as well.

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That's a freakin' stage 4 cam Steve. So far from smooth idle.