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High Rpm grinding noise.
Hey all, like the title says. I’m running a 350/TH350 automatic in a 72 c10. I’ve been hearing a metal grinding noise, only when I get into high rpm/speed, around 55+. I never hear it unless it is around those speeds. Unsure as to where to start. Timing issue maybe? Anyone else experience this? Any help would be awesome, thanks all.
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