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**john** · 06-02-2014, 05:43 PM

Those are all cast numbers. You are looking for a machined boss with stamped numbers, as mentioned by bruce1968.

06-02-2014, 05:43 PM	#6
john member #16 Join Date: Dec 1999 Location: Yuba City Ca. Posts: 3,618	Re: 69 C10 6 Cylinder Engne Codes Help Those are all cast numbers. You are looking for a machined boss with stamped numbers, as mentioned by bruce1968. __________________ john http://67-72chevytrucks.com/vboard/showgroups.php board vendors http://www.flickr.com/photos/1745471...7602865984234/