Technical Brake issues

57 Chevy with power disc front brakes. Brakes are marginal at best. Booster is good, new m/c. I am wondering if since this was not power break car originally if the throw of the brake pedal is wrong. Can this be corrected with a different m/c, or do I need to drill a hole in pedal arm, and if so where?
Thanks

 

Let's see a picture of your pedal arm with the rod that goes to it. Maybe we can see if the geometry is wrong

 

If you put power****ist brakes on a non power brake car it will USUALLY have very easy or low foot pressure if you kept the MC cylinder diameter the same. Non power brake ratio is 6-1 or more and power 5-1 or less.

 

https://techtalk.mpbrakes.com/how-to-series/calculating-pedal-ratio

 

The factory Power Brake pedal's were different than the standard brake pedal's, if that helps.

 

One of the companies used to tell you to drill a new hole for the brake rod.

 

Do you have two threads running on this topic?

 

Manual brakes have a higher pedal ratio than power brakes.

This can lead to a "too easy" pedal, allowing for easier lockup if you aren't accustomed.

Not the other way around.

 

Correction, three threads.