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beerman
February 26th, 2016, 12:19 AM
Stumbled on to this list of GMC V6 casting numbers hope someone finds it useful
Funky61
February 26th, 2016, 03:12 PM
Welcome Beerman and thank you. When I get a chance I'll check the number on my 401 to see if it matches.
TJ's GMC
February 26th, 2016, 03:34 PM
Thanks for the link!
Funky61
March 2nd, 2016, 12:53 AM
Well that 2476579 does match my 401 block.