Bad balance? Or improper flywheel?

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Shields

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Kelowna
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Dayton
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1976
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C10
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6.3
Hello All,

In my quest to build this project truck of mine I’ve swapped out my th350 for a super t10 and so I changed out the 168 tooth flexplate for a 168 tooth flywheel. My motor is a 383 stroker with a long-rod externally balanced kit from eagle speciality products. The flywheel I got is externally balanced and my engine shop said it should be a bolt on deal. However, I’ve noticed now that I’ve got my motor running my crank pulley has a slight wobble when looking at it from the side, it looks like it deviates less than 1/8 of an inch when running but enough for my eye to catch it. I cannot remember if this existed before I did the transmission swap. Would anybody here have any ideas what that means? Is it worth worrying about? My motor has less than 1000km on it and it runs great even with the wobble.

Thank you for any advice.
 

ali_c20

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Alexander
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Check if your balancer or pulley is loose. Check if the pulley is bend.
 

fast 99

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How old is the balancer? If worn out outer ring can slip.
 

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