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After messing with a lame rebuilt one (I should know better!), I am going to buy a NEW one. Here are the choices:
1. Raybestos master cylinder professional grade: part #MC36406, $107.99
2. Bendix Master Cylinder: part#11571, $80.99
3. United? Master Cylinder (from Napa) part #UP36406, $85.49
Does anybody have a preference here or another suggestion?
I have a 73 Dart Swinger, power brakes, front single piston disc, rear 10" drums (10 X 2.5"), it is an 8 1/4 rear end.
How about getting one of the new aluminum MCs (specify one of a mid-80s M-body) and using the 2-to-4 bolt pattern adaptor plates. The adaptor plate does NOT mess up the depth of the pushrod- with the plate in place the pushrod depth for the aluminum MC is exactly the same as the old iron one.
The advantages to the aluminum MC are many. Its light. Its got an anodized bore that doesn't corrode easily, so 9 times out of 10 even one from a junkyard is perfectly serviceable. Its readily available. It just flat *works* better than the old iron MCs, in my opinion.
Here's an example of one of the adaptor plates, they're available from several sources on the 'net:
http://www.ornocar.com/hwang.html
The mounting studs can be left out for use with a power booster.