brake booster component interchange

[heviarti]

What I have is a '79 3/4 ton 2wd pickup. The previous owner states that the brakes have always been very hard. You pretty well have to stand on them. I am pretty sure it's the vacuum booster. I don't have $116 to replace it. Enter the late model parts truck. My employer just bought a 1994 K1500 pickup. A trip to the parts store told me that both are 10-3/4" dual diaphragm boosters. Both are by delco. What's odds that I can change out the diaphragms?

 

[heviarti]

Anybody? I can't be the only person to have wondered this.

 

[350runner]

Are the part numbers for both boosters the same?

Sent from the dust in front of you!

 

[89Suburban]

I never heard of anybody doing that. Would be interesting to see though.

 

[heviarti]

No, the mountings on the bodies are different. Also, the studs are metric on the 94. I just imagine that the rubber parts inside might be the same.