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Old 11-18-2023, 05:22 PM   #7
chevy72blu
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Join Date: Apr 2004
Location: Las Vegas, NV
Posts: 2,188
Re: Engine running rough below 3k RPM. Fine above it. ???

Yep! Passenger side, cylinder 8. Cracked boot.

Of course it was the last plug and wire I changed

Runs great now. Thank you!
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'72 C20 SWB convert. 5 lug, LS1/4l60e
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