my 49 did something like that at one time, it turned out something hit the brake line, and put a very slight knick in it, and i went to put the brakes on and it locked up, might even want to get you lines
1949 Chevy 3600 Flatbed all orginal 1964 gmc 4000 1973 gmc 6000 2005 chevy duramax 4x4 1994 chevy 1500 Trucks are GM and Tractors are Orange
"I don't measure a man's success by how high he climbs but how high he bounces when he hits bottom." - General George S. Patton
