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Discussion Starter #1
I have a chv 454 in my carra jet boat,it makes a noise at 2800 rpm to 3000 rpm like you put screwdriver in a fan blade.It will onley do this in the water.The motor runs grate the rest of the time. Need help.
 

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the same thing happened to my 454 and it was a flat cam lobe and a few bent push rods. it would do it above 2500 rpm's and sounded horrible. sounds like its time for a rebuild.
 
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