1967 master cylinder judging guidelines

[William O.]

I know that the 1967 Corvette master cylinders have casting number 5455509 with a DC stamp on the front machined area is used for standard and J50 power brake cars and casting number 5480346 with a PG stamp is used for J56 cars.

Question: Are there dates codes, and how do identify them?

Thanks,

Bill

[Joe L.]

Re: 1967 master cylinder judging guidelines

Bill-----

I'm not sure that all of these master cylinders had date codes. However, if they are present, they will be stamped into the forward brake line machined boss. The stamping is rather small characters and, usually, lightly stamped. It will be a julian-type date code.

[Kevin Whiteley]

Re: 1967 master cylinder judging guidelines

The 68 TIM&JM indicates that the brake master cylinders are dated. I would think that the 67's were similarly dated. I recall (don't quote me) that they used the Julian method, with the following style.

YDDD where Y is the last digit of the year (7 for 67), and DDD is the Julian day. I read this about 2 weeks ago, and now I can't find the reference.

[Mike M.]

Re: 1967 master cylinder judging guidelines

joe: i agree. Some but not all 67 mast.cyl's were date coded. i have and have seen examples of both varities.. mike