Would I gain anything going to a 77 style 3/4-ton master cylinder & booster

[Engineered Vintage]

I know I've seen similar questions to this answered before,
but would like an idiot-proof answer.

On the First Gen, the prop valve is right next to the master cylinder.

Is there an additional prop valve somewhere else on our trucks? (I'm too lazy to look - and this site is such a wealth of information)

Do the newer style trucks have the same style prop valve as ours?

In my opinion this valve this close to the master cylinder is a little unsightly - would it be possible to move it.

I know Greg72 went to 1-ton running gear with no problems after replacing a vac hose.

Would I gain anything by getting a '77 3/4-ton style master cylinder & booster when I go to 3/4-ton axles with front & rear discs. (corp 10 bolt & 14 bolt)

 

[R72K5]

no, just one combo valve per truck, they all do the same thing and are same design as far as what they do and how they operate

i cant see much gain by putting 3/4 ton booster and cylinder on unless youre really hauling alot of weight all the time,

 

[Triaged]

2nd gen blazers use a prop valve mounted on the frame rail. It is also used as a "T" in the line (it has 2 front outputs).

 

[Steve_Chin]

FWIW, you can plug one of the front outlets on a dual front outlet proportioning or combination valve by installing a bleeder screw in it like I did for my 4 wheel disc setup.

 

[Engineered Vintage]

Steve-

Forgive my ignorance, but what would you benefit by doing that?

 

[Steve_Chin]

Simple, it allows me to run the proportioning valve that I needed to run with the 4-wheel disc setup. The stock combination valve certainly wouldn't have worked properly.