Hurt 340
'S why I like mechanical lifters. "Back when" I used to tear up the woods in the old FJ-40, that 340 saw over 6K QUITE a few times, and over 7K "several." NEVER have I bent a pushrod or had to pull the covers off to put something back together. These, by the way, are the very same 273 rockers in the 67 right now.