360 magnum vs 5.7 hemi

venomvpr900 said

DGC333
so you are saying that the the newest mopar performance catalog is misprinted? and the spec. sheet that came with the 360/390 crate that I just bought is misprinted? If they are wrong, thats great to know. But everything I have on it shows that it's a 9.0:1 compression motor with a 288/292 dur. cam with .501/.513 lift

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No the 2009 MP catalog lists the 390 HP 360 with "10:1 pistons". And, I have always been told that the 380 and 390 HP engines have different pistons. A 288/292 duration roller cam is going to be 240+ duration at 0.050". If the engine was 9:1 with that kind of duration at 0.050 I would think the bottom end would be very soft. That is not the case with those motors so I would tend to believe they have higher compression than the factory magnums.