The 1960 - 1966 Chevrolet & GMC Pickups Factory Correct Restoration Thread

[60-66]

Look up, or google, Julian Date Calendar , it puts the date as March 7th for 066 . Its calendar year . GM used this method on other parts also. As far as how it relates , its always before or close to before the build date of the truck. Do you by chance have the build sheet to this truck ? The master cylinder would be on that sheet also.

[f66]

Originally Posted by 60-66

Look up, or google, Julian Date Calendar , it puts the date as March 7th for 066 . Its calendar year . GM used this method on other parts also. As far as how it relates , its always before or close to before the build date of the truck. Do you by chance have the build sheet to this truck ? The master cylinder would be on that sheet also.

Good info. I do have the build sheet (attached). Block 65, Brakes has 364. Does that correlate to anything? Is that the place that you are referring to on the build sheet?The March cast date seems good and accounts for time to machine, assemble, and ship to Fremont.