I did a little measuring today- - - -the center-to-center distance between can lobes on a stovebolt cam and a big block MOPAR (383, 426, 440, etc.) are only .020" different. That means a set of hydraulic roller lifters with the anti-rotation bar between them will be a virtual drop-in fit once the stovebolt lifter bores get sleeved down to the smaller diameter of the MOPAR lifters. With a minor modification to some pushrods, we can eliminate valve adjusting AND using motor oil that needs ZDDP. I'm also designing an external oil manifold to supply pressurized lifter oil to blocks that aren't factory drilled for hydraulic lifters, including 216's. A vendor on Ebay is selling sets of 16 hydraulic roller lifters for $110.00 with free shipping.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!