sonic booms from sbc 350?
I have a 1966 impala with a mildly built 355. duel 3" exhaust with "X" pipe and 40 series flow masters that end right before the rearend. car runs great but i get these sonic boom sounds when cruising at about 3,000 rpms. tack does not jump. is this normal with my exhaust?
Last edited by brian400ex; 04-26-2009 at 05:24 PM.
Reason: wrond description of exhaust