The Stovebolt Site Forums The Shop Area Driveline Disc Brake istallation problems

Howdy, Im trying to install the front disc brake conversion kit from Performance Online on my 57 gmc half ton and i dont know if im doing something wrong or the setup is wrong but im having problems. The kit that i have is the 11 inch rotor one. When trying to install everything earlier i was having problems with the calipers not clearing the spindle. I bolted the bracket up with the spacers between the bracket and the spindle and when i wanted to bolt on the calipers the spindles get in the way of the calipers.
http://i1205.photobucket.com/albums/bb422/gumbi18/1957%20GMC%20half%20ton/002.jpg
http://i1205.photobucket.com/albums/bb422/gumbi18/005.jpg
since the calipers dont clear they do not bolt up like they should. This is the part of the caliper that is hitting the spindle:
http://i1205.photobucket.com/albums/bb422/gumbi18/005.jpg
Could i just take a grinder to that nub and make a little cutout for the corner of the spindle to make things fit right or would that be a bad idea.
Has anyone else had this problem or am i just missing something.
I havnt called POL about this problem yet, thought i would try here first.
Thanks
Cody

I seem to re-call I had to trim mine a little (55 2nd Series). It won't hurt to trim just enough to give you a 1/16" gap. Those "nubs" are for locating and holding the hose end to the caliper. There isn't any passages in that area of the caliper.

I had to trim my calipers in the same location a little bit. Just took a 4-1/2" grinder and dressed the ear down a little bit until it cleared.

Ok thanks I did that and everything worked out fine. Didn't know if that would be a problem.

That's the nice thing about this board. Normally someone has experienced the same problems and fixed them before.