weird chevy 1500 drive line noise

[bob442]

there is a nice SS set of heads on EBAY for 78$ well, a few sets, my flange area is just rotten

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[60dgrzbelow0]

Bob...

This "Big Truck" forum seems like another good place to plumb their depths for some more answers. This particular link brings up some other possibilities for the cause of the noise and they all seem to point to recent changes in the kinds of replacement lubes as a possible culprit:

http://www.fullsizechevy.com/forum/g...ion-noise.html