Thread: 478 to SM420
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Old March 10th, 2017, 12:09 AM
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Default Re: 478 to SM420

Quote:
Originally Posted by arepoff View Post
I guess nothing is simple. I would assume an engine building machine shop could balance the 478, also assume the whole engine would need to be disassembled and each part weighed. I will need to check with my local machine shop to see if they can handle it. Thank you.
Yes not every machine shop will have the bob weights for the GMC V6, I do remember there was some engine remanufacturer in northern Oregon that specialized in these engines back in the 90's.
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