I have run ls6 behives on a couple of my magnum motors. Cut the spring pockets for diameter and install height, use the ls retainers and the magnum keepers. Some light clearancing of the top of the retainer is needed. This will net you with a 1.77 install height and a valve spring that is good to .550 lift on a magnum head. First set is still being run with a 242/248 @.50 .550/.550 reground cam. Not bad for 60$ valve springs.
