Sorry for the following.
There's a mathematical process called the Fourier transform which takes "noise" and determines all of the individual frequencies and intensities which give rise to the "noise." Has there ever been this kind of analysis of engine "noise?"
Again, I apologize.
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
