Disc brake ????

[Cannibal]

Anybody recognize these calipers previous owner said GM.What year make??

My rig is a 72 wpowerbrake booster(dual style )
I replaced the master cylinder with a 76 1 1/8 bore,
The pedal is staying way low
It does have the propotioning valve that matches the booster .
I think the might be bad
Any body use an adjustable p valve?

Thanks

[Allan E.]

I don't recognize them, but that's not a 72 axle, either. The front axle has been swapped out. If it's a D30, the axle is from a 73 or 74. If it is a D44, it is from a 74 or later. The earlier ones had closed knuckles and drum brakes, and discs were not available until 74.

The master cylinder looks like one for front discs/rear drums. Whatever you have, it was "customized" at some point.

[Cannibal]

I was told by previous owner the axle is a Dana 30
I read somewhere that they had open or closed knuckles.
I dont know if the cal mounting bracket is a stock newer unit or what.
I know it has a dana 300 transfer case and a wide 4spd