Impeller and wear ring install

tex78

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I have an impeller nut socket, shims, a square and a digital end micrometer here in Sicamous if that helps, no feeler gauge though.

I let my buddy doo my 312 and all he had experience with was 309(totally different) and we way overtightened it and we stuck it(5.7A-Aluminum). I cleaned it up and reinstalled it the right way and after 4 years I’m weak on the holeshot too. If I recall its 0.030 measured at the top. I guess I better look it up. Let me know if I can help.
I've got feeler gauges if you need
 
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