The 350 in my '56 is relatively quiet using the same generic glaspacs I have on the '54. Something about the V8 makes the exhaust notes smoother than the split manifold six.
I would guess that some noise cancellation is going on in the collectors of each side of V8 which cannot be duplicated with the Stovebolt 6 due to the shared exhaust ports of the 2-3 and the 4-6 cylinders which limits how one can split the manifold.
If you have the opportunity of hearing a V8 with pipes coming straight out of each exhaust port at wide open throttle, you will find it just as annoying (or awesome, depending on your personal taste) as a split Stovebolt exhaust.
BTW, thanks for sharing your satisfaction with straight through glasspacs. It gives me the confidence to go with the stock straight through mufflers on my 350.
Carl
