maybe, but I never heard them--but we did have a fellow with a '52 Pontiac straight eight that was split 5/3 and sounded so V8-like that he was always being picked on to race by other guys with V8s. The V8 thunder sound comes from a missing beat from each bank that happens to be in the other bank due to the way the crankshaft hooks all the cylinders together on a 90 degree V8--as Joe Hand said the indy cars have each pipe collecting four equally spaced cylinders (firing wise) all together (which necessatates grabbing the "missing" cylinder from the opposite bank and bringing it to fire out through the other pipe making the exhaust runners look like a "snake pit") Once in a blue moon you will find a V8 dirt track car with that kind of system and its sound is quite "buzzy" That kind of system, though having a higher power peak when done properly, makes for a less broad, and more peaky power band, more suited for a longer track than a short track where the motor speed will swing in and out of that peak.
