three best sounding v8s in my opinion that ive personaly heard are the 302 z28 chev from the 60s at 7000 plus rpm. A hemi hellcat (mostly because of the blower wine) and probably the hands down best sounding v8 of all time is (and I hate fords) the coyote v8. At redline it will about send shivers down your back with an open exhaust. Honorable mention goes to a modified flat head ford with an open exhaust. there just so mechanical sounding and sound like no other motor.