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Most horrible noise in my engine
I think my luck may have run out. I was running my truck this weekend pretty hard. Everything seemed fine until about 4800rpm, just before shifting. The engine pops once or twice, then emits the most horrible high pitched squeal. I'm pretty sure it's a metal on metal sound. The belts are tight, and she holds steady oil pressure at around 40psi. It seems to run fine otherwise. a friend of mine thinks the popping noise could be a bad plug, bad wire, or distributor, but he's never heard a squealing noise like that. Anyone got any ideas? 
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"looking back, knowing that you gave it your all.... win or lose, you finish a Champion" Dale Earnhardt
"They say hard work never killed anyone, But why take a chance? 
63 GMC C10 Custom LWB 355/350 AT
00 Chevy Silverado 1500 base V6/AT
07 Chevy Monte Carlo SS 5.3 V8
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