Hi, guys new to the site as far as posting a forum but been here for info more then once. I swamped out from 5 lug to 8 on my 1/2 ton. and after putting rear 60 in i have grabbing brakes. everything except the backing plate is new and i have switched drums for another new set with no change in problem. any help greatly appreciated thanks
Did you back off on your self adjusters?
No wait that wouldn't make sense because if they were too tight you woldn't be able to get the drums back on.
Did you bleed the system?
IF you have air in the lines, that could give you uneven braking, (and a spongy pedal)
Also you may want to lift the boots on the wheel cylinders to see if they are leaking and need to be replaced or rebuilt.