[Bruce Lancaster]

Flatdog's famous high-12 second 3,000 pound '34 used the 4 1/4 stroke in the blown 307. It had an oil consumption problem on the street.
Flatdog was a relentless engine developer and re-flogged the ring package a couple of times, trying zero gap type and others, and was never able to kill off the oil consumption. He theorized that 4 1/4 was simply too much stroke for the rod length and that piston rocking was defeating the rings, kind of my conclusion too.
His next engine in the development was to be shorter stroke; don't know exact plan, and he died before getting to the results he wanted.
He was as thorough as a builder can get, and perfectly willing to tear his engine apart repeatedly...the package was an intellectual challenge to him, a quest for the maximum street power flathead, and not something he ever regarded as a completed project.