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Old 05-02-2016, 03:51 PM   #1
Bruin_26
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Join Date: Mar 2016
Location: Riverside, California
Posts: 11
High RPM

Hey guys, so I finally have my '72 C20 back on the road but I have one issue with the truck running at high Rpm when I'm running at highway speeds. Everything seems run fine when I'm cruising below 40 mph but when I try to pick it to highway speed it jumps to almost 4000 RPM and stays there. Just wondering what the possible culprits could be.

Thanks in advance for any responses!
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