The Stovebolt Site Forums The Parking Lot Big Bolts Better braking for 1946 Chev.1 1/2 ton

I would think that 46 had a hydro vac, some one with knowledge about that vintage should chime in here, but it sounds like too much downhill speed to start with as in being in too high of gear and riding the brakes, rule of thumb is go down the hill in the gear you went up.