they are on my stroker now, maybe 100 miles on it since assembled, no rocker arm failure, i did mess up acouple adjusters- all my fault, the cup on the adjuster got nicked up because i had the lash to loose on a couple of them,cam is pretty nasty for a streeter 637./651 lift, with 1.6, 263/
[email protected] solid .i did have to do some grinding on them when i put them on my x heads , but thats been some time ago.at the time i bought them was on a tight budget.
