Which Vacuum brake pedal

[Evansmount]

Ok, So here is where I am on this.

My powermaster took a crap on me (Surprise) and I pieced together the vacuum kit myself. I got the master/booster combo (all parts new) from a 1987 Monte Carlo SS , dual diaphram. Kirbans vacuum block, and the Brake pedal from a 1979 El Camino. It feels squishy, and the pedal sits low, and won't return all the way up to the brake switches. I'm at a loss, what did I do wrong here?

Wrong pedal perhaps?

 

['87 Turbo "T"]

Were you sure to bench bleed the master cylinder completely first & then do a complete brake system bleeding?

I’m not sure if a ‘79 brake pedal is the same(hole location) as later pedals.

If the pedal is correct, I’d make sure that you’ve bled everything correctly.

 

[Chuck Leeper]

The soft pedal issue isn't caused by the pedal choice.. There's something else going on.

 

[LANDAU LIMITED]

You sure it's mounted in the bracket correctly? I thought I did and it wasn't. Wasn't through the bolt Fixed it and with all the bleeding I did trying to fix it once it was correct the pedal felt great and I could lock up the fronts. I dropped the whole bracket down, mounted the pedal I put it back in. So much easier than trying to mount the pedal with the bracket installed.