Main Bearing thump (?) in 1992 Cadillac Deville 4.9 V8

Could this be the classical so called main bearing thump in this 92 Cadillac Deville? The sound is not as clear in the video as it is in real life. Microphone on camera must be getting bad.

[@joelakers410]

My favorite caddy

[@KJBPSkipper]

maybe put the camera by the engine with the hood up and give it some gas,what a concept.lol.

[@jjjackson9568]

95 deville does the same thing i can here it very well