[Shyguy]

We put the front cradle with power disc brakes and the rear end with drum brakes off a '71 truck on my '67 swb stepper.

I can lock up all 4 brakes easily. Of course locking up the brakes is not a good way to maintain control so I don't do it often.

My son's work truck has power drum brakes and has no problem stopping the lwb truck with a 454.

The point I guess I am trying to make is if the brake system is operating the way it was designed on these old trucks they will stop just fine.

When many people do brakes they forget to have the discs or drums turned to remove the glaze.

Hydro-boost power brakes are used on heavier duty trucks, my '75 C-30 dually and my '92 K-3500 both have the hydro-boost brake system.