That might work well for a lot of people that just can't seem to tune in on a specific sound like my buddy that bent two pushrods adjusting his SBC in his driveway and the guy I bought my 88' Monte SS parts car from that locked up his newly built 406 SBC with Dart heads, we pulled it at my house and I tore it down for him since it wouldn't spin, it bent a rod which twisted that piston and some of the valves in the heads were broken, I figured worst case scenario on that one.If you have headers and they are obnoxiously loud, try using a mechanic's stethoscope. You may need a third hand so get someone to hold the probe against the rocker stud base for you. It will muffle all the exhaust clatter and you will absolutely be able to hear the rocker tap.
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