10" Drum Have a Prop Valve?

[ermarccio]

68 Barracuda with manual 10" drums. I know I have a distribution block/safety switch, but was there a factory proportioning valve? Does the distribution block/safety switch perform and type of proportioning?

Thanks,
Eric

 

[Sedanman]

no it was a balanced system with drum brake cars. The prop valve was for disc cars to compinsate for front disc and drum brake combos

 

[ermarccio]

Thanks for confirming

 

[nm9stheham]

The proportioning in the drum/drum systems was set by the ratio of the front to rear wheel cylinder diameters, plus the relative widths of the shoes front to rear.