67 master cylinder casting 5455509

[Richard B.]

I would like to know how to decipher the julian dating on the subject master cylinder. The part i am looking at has "1314". I don`t know if this is the entire sequence or if part of it has been worn off.

[Joe R.]

Re: 67 master cylinder casting 5455509

I believe that for 1967 there was no Julian date stamped on one of the output line flanges, although that practice began in 1968 or later. If the one you are looking at is stamped "1314" it might be the 314th day of 1971. I'm not sure the 545509 casting was still in use in 1971, so my interpretation of the date code may not be correct.

[Terry M.]

Re: 67 master cylinder casting 5455509

Yes Joe the 509 casting ran through 1972, and a bit beyond as well. And so did the power brake casting number as well.

[Richard B.]

Re: 67 master cylinder casting 5455509

thx for response...i also got some good info from the archives and selected a rebuilt original with no julian dating for my early 67. I can see differences from the nice repos and the originals with them laid side by side. thx again for reponses.