Author Topic: Knocking, Popping Sound  (Read 3542 times)

Offline TxFiddler

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Knocking, Popping Sound
« on: June 02, 2010, 05:07:13 pm »
In my 1980 C10 looooooonnnnnggg bed 2wd, I am hearing some strange noises when driving.  I know it's 30 yrs old and all but I need to see if anyone else has the same experiences.  Between 45-55 mph, there is a bumping sound right underneath the driver's side floor board.  I suspect the speedo cable but not real sure.  At slow speeds, like in parking lots and such, there is a metal popping noise that seems to come from under the cab.  Sometimes, after I get out, the frame or something underneath will pop after a few seconds.  Could new cab mount bushings correct this?  Just checking to see if anyone else has the same problems.  Any suggestions are greatly appreciated.  Thanks.
80 C10 2wd / 427 BigBlock / 700R4 / 3:42 Eaton Posi LSD / 770 cfm Holley Street Avenger / Doug's Headers / MSD ProBillet Distributor / Champion 3 row Radiator

Offline Captkaos

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Re: Knocking, Popping Sound
« Reply #1 on: June 03, 2010, 06:06:06 pm »
Check your body bushings and possibly check your exhaust system.