master cylinder casting number help

[George R]

Hi guys,
The MC on my 69 Dart has a casting number of either 2223541 or 2225341. I can't see it clearly enough. LOL Casting date is X3440. What does that mean?
Anyway, I BELIEVE this is a stock MC for a 69 Dart with SBP disc brakes. I have LBP discs from a 73 Dart on my car. Will this MC work for the LBP discs? Will I need the porportioning valve from the LBP car too, or can I use the stock valve from the 69??

Thanks for any help. I cannot find any info on these casting numbers from Google. You guys have done this swap a million times, this is my first one! I guess I'm a "Brake Swap Virgin"! :toothy10:

George

 

[BigHook]

George, I have never performed the SBP to LBP swap but if I were to, I'd probably go with the 73 MC. Whether the larger bore is a factor I can't say but it makes sense to keep the brake system components consistent as with the appropriate proportioning valve. Here's a couple of of MC application tables. May help a little.:dontknow:

 

[George R]

Thanks BigHook, I appreciate the help. I can't see my casting number on the sheets you posted, but thanks for going out of your way to help.

George

 

[green1]

No power, the smaller bore will save your leg. Like a 7/8" bore.

 

[Oklacarcollecto]

Great Listing!