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Originally Posted by jeffcoslacker
Huh...sometimes I've had a car in the shop with a really loud lifter, and been able to push hard enough that I must have forced something out of the orifice in the lifter and got it to pump up normally.
Stupid question, but are you sure it's internal? Not something belt driven or anything?
The way the sound comes through on the vid it almost has a scuffing sound...is that just the video sound distortion or what? Doesn't sound as sharp as a valve train noise usually does...kinda sounds hollow like something hitting a casting or a flexplate cover...
If there's any chance, pull the belt off and see what it sounds like...
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I got it fixed with the advice of someone from w-body.com. Just coming here to close the issue for others. What was suggested to me was that a lifter lost its oil pressure and all I had to do was let the car run once until it heated up to its normal operating temperature and rev it up to about 2000+ rpms and keep it up for 30-60 seconds, all to build up the oil pressure
After checking and retightening all the rockers the noise didn't go away and then I simply started the car and waited, and waited. It heated up and I revved it and then a couple minutes later the noise quieted down and then *bam*, it went away.
Thank you for your suggestions here! I'm glad I was able to solve it.