I'm in need of a 66 and possibly 64/65 manual brake master cylinder casting # 5464293. Looking for a date code of 150-200. It will not have a bleeder valve.
Contact me @ pchopesq@aol.com

Thanks

Mike

 

i have one with that casting number on the 65 cutlass i'm driving but i dont recognize a date.i have converted to disc brakes and will be removing it.

 

The date code is on the bottom of the reservoir bowl. It's easy to see if it's not rusted. Let me know.

 

i see what looks like two screw heads which is usually the date code area but cant see numbers,it's not rusty but it's still on the car so using a mirror

 

That's it but is hard to see with a mirror. What is the build date on the cowl tag? If it's original to the car,that will help. Thanks.

 

06D date on trim tag

 

OK,great. The car I need it for is a 07D & that's pretty close. When are you planning to remove it?

 

soon,couple weeks probably.honestly dont know what its worth but i wont be reinstalling it,let me know what you are thinking

 

It's your call but I need the date code. If you want to sell it,I'm a player but need info.

 

once i remove i should be able to find the date

 

Mike
I retrieved from the attic of my shop the working master cylinder I removed from my 66 F85 seven years ago at 9741 miles when doing a drive line conversion. We had some nice weather today and got around to it.
Attached are photos. I lightly wire brushed the areas of interest.

I believe the date code is "174" with a very rough "1". It could also be just "74". you will have to decide for tour yourself.
Jim