Aluminum master cylinder questions-Early A

[65Valiant310]

I am contemplating getting an aluminum master, maybe one from an 80s diplomat (new unit).
Would I need to change the pushrod or will the stock one work on an early a-body?
thanks!

 

[pettybludart]

Do you have 4 posts or 2 ther now?I,ve use the cast 4 post(dual cyl.)old style 73up with the original pushrod from single master.For the aluminum dual post(I used from a newer Dakota)you can buy an adapter plate 4 to 2 post.You might have to adjust your peddle stop for tailights.I now have a 2 post mounted on the top 2 posts and modified an ajustable pushrod for my application(with fenderwell hedders)So yes it can be done.Pic of my 66 Dart

 

[65Valiant310]

Yes I have 4 posts currently.

 

[AndyF]

You should be able to use your existing pushrod. You can get the correct adapter from a number of places such as Mancini Racing or DoctorDiff.com. They can also sell you a heat shield like the one pictured above.