Anyone running Tom's new Ultimate 9" brake booster and 1.25" master cylinder combo? This looks like the strongest set up for vacuum assist.

[79INA69]

Just wanted to add some more about Toms setup. Now that I’ve had some more time and miles on the setup, I am really happy with the braking action. I can stop with ease. Plenty of power to lock up 33’s, but real easy to modulate.

I re-bled them and the little bit of slop/free play that I had before has reduced as well, pedal feels very tight and firm.

I’m very happy with it.

Rich

So you are running the complete set up with the 1.25" bore master? Can you get me a vacuum reading from your engine for reference?

 

[79INA69]

Just wanted to add some more about Toms setup. Now that I’ve had some more time and miles on the setup, I am really happy with the braking action. I can stop with ease. Plenty of power to lock up 33’s, but real easy to modulate.

I re-bled them and the little bit of slop/free play that I had before has reduced as well, pedal feels very tight and firm.

I’m very happy with it.

Rich

Sorry, are you running the larger style Caddy calipers or the smaller size used on 9" axle conversions?

 

[richg]

Yes, I’m running the complete setup from Toms (mc and booster). I don’t think I have a working vac gauge currently, so don’t think I can get the measurement.

The rear calipers have 2.37 OD pistons, no provisions for parking brake. It is an older rear disc conversion that I think no one really does anymore.