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glennpm · 07-14-2020, 08:52 AM

Hi Farmerdick,

The 1" bore shouldn't stroke much more than the stock 1-1/16" bore. I think some of the Mustangs had a 7/8" bore. The 67 is a dual bowl type. For disk brakes in the front circuit, there is a residual pressure check valve which maintains about 2psi. For the drums in the back circuit there is a 10psi check valve. You may want to think about adding a 10psi valve for the front drums. This won't effect the stroke to brake application though that you have.

Like others have mentioned, shoe adjustment and push rod adjustment will make a big difference.

Regarding "pedal ratio and is 5:1. Heard that it should be 6:1" will affect the foot force you need to brake but not the stroke to actuate the brakes, i.e., the 3" you have.

07-14-2020, 08:52 AM	#12
glennpm Senior Member Join Date: Sep 2014 Location: Wiscasset, Maine Posts: 1,981	Re: 40`Ford Brakes Update from 7/10 post Hi Farmerdick, The 1" bore shouldn't stroke much more than the stock 1-1/16" bore. I think some of the Mustangs had a 7/8" bore. The 67 is a dual bowl type. For disk brakes in the front circuit, there is a residual pressure check valve which maintains about 2psi. For the drums in the back circuit there is a 10psi check valve. You may want to think about adding a 10psi valve for the front drums. This won't effect the stroke to brake application though that you have. Like others have mentioned, shoe adjustment and push rod adjustment will make a big difference. Regarding "pedal ratio and is 5:1. Heard that it should be 6:1" will affect the foot force you need to brake but not the stroke to actuate the brakes, i.e., the 3" you have.