Corvair Center Forum : Corvair Center Phorum
Posted by: JerryM ()
Date: June 12, 2019 08:23AM
Are casting marks, for example "GM 27" or "GM 1" and so on, indicating a tooling master or particular foundry or ?
Re: Casting marks
Posted by: Ed Dowds ()
Date: June 13, 2019 04:21PM
Sometimes casting marks like those define which form was used to cast the part.
They may have started with #1 and when that wore out they went to #2 then #3 and so on.
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