are sb 427's really 427 c.i.'s

[patrickt]

Originally Posted by MFE III

Why would a 427 SB sound different from a 427 BB? Same size combustion area in each cylinder, same charge . . . I don't understand

Because the harmonic resonance is different in a big block, regardless of whether the combustion chamber size is the same, or even smaller, than that of a small block.

[olddog]

Originally Posted by patrickt

Because the harmonic resonance is different in a big block, regardless of whether the combustion chamber size is the same, or even smaller, than that of a small block.

I thought it was the extra mass of the huge rotating assemble, coupled with the extra air swirling in the cavernous block, along with pumping all the oil, and not to mention all the extra friction, just made it work harder. All that extra grunt gives 'em a different sound.

[Great Asp]

Originally Posted by olddog

I thought it was the extra mass of the huge rotating assemble, coupled with the extra air swirling in the cavernous block, along with pumping all the oil, and not to mention all the extra friction, just made it work harder. All that extra grunt gives 'em a different sound.

I got excited reading this post

E