[65blackfleetside]

Nice Looking Truck!!!

I agree with joedoh
I am running disk/disk and am using a stock S10 master cylinder and stock AC delco booster along with the original factory OEM proportioning valve that I have never adjusted. My truck's brakes are perfect!

Also side note- there is a line size difference with OEM steel lines. If my memory serves me correctly the drums need the larger size steel lines that travel down the frame. Disk typically use the 3/16" diameter line. Drums 1/4"

That being said... I just used the stock 1/4" OEM rear S10 line (S10 originally used drums on rear) that travels my frame back to rear axle. with this set up-

My truck will stop on a postage stamp.

The ports on the master cylinder front and rear are sized 3/16" and 1/4" as well.