manual brake conversion with super hard pedal
scot
The manual brakes are going to be a good bit stiffer, that's the nature of having no power assist... if you did relocate the rod to the master on the pedal and it's still really stiff, that might just be normal.
I'd try driving the car SLOWLY and see if it stops o.k., like in the driveway, couple mph, etc. Start there, might be just something you have to get used to
The 4th gen Camaro has probably one of the biggest issues with this that I know of .....
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