Mopar Cam- how many more degrees @.006 to equal at .200?
The thing is; for most of us streeters,
who now have a handle on the SCR/DCR/Ica/ and gearing relationships, the next bigger cam from the same manufacturer, pretty much blanket-cures the whole situation, especially if you start with a longer than 3.315 stroke, cuz you don't have to give away as much low-rpm torque, to get the hi-rpm power.
So these types of data, IMO,while commendable, and very interesting to study, are mostly gonna help the 3.315 stroke engines.
For most streeters, we only have ~3 or 4 sizes of cams to choose from, say, something like; 216,223,230,237, a size being ~7 degrees. I mean the 230 I have is already pushing the limit for me, and more so for my car. And 218 is the smallest I would consider. And for optimum use, the compression ratio has to be adjusted for each one.
You can always throw a next-bigger cam into an engine, and usually get away with it one time. But if your first cam was too big, and your compression was optimized for it, then the next-smaller cam, with it's smaller Ica, is likely gonna put your engine into detonation, requiring a new lazier timing curve, and the end result is just a big disappointment.So I can definitely recognize that a smogger-teen is gonna have to be careful.
But with a 360, when in doubt between two cams,, just throw the bigger one in there with plenty of compression, and it will fly........ because the 3.58 stroke has quite a bit more Effective stroke to play with, than the 3.31s.
Would such a chart help me? Sure it would, cuz I want the biggest .050 I can get, and the biggest area under the curve, commensurate with the shortest seat to seat so I have both ends covered in my Manual-trans/3.55 combo.
But A guy with an auto-trans, just throws the next bigger TC at it and his problem is solved.
I mean, that is how I see it.