Snip other stuff
I talked with the man behind the V8 SeaBee last saterday.
Over 1000 trouble free hours on the LT1 in his own plane.
Several hundred on the doc's LT6.

The LT1 has had the drive apart several times checking for wear - none
found. Engine has not changed compression, oil pressure, oil temp, or
oil consumption since first 20 hour of break-in.

And that "trouble free" IS trouble free. No changes required.
The LT6 has needed some changes in code for theO2 sensors from what I
remember. (2 sensor vs 4 sensor vs no sensor)

The problem with the doc's engine was as soon as he went over 2/3
throttle the computer went to full rich. The problem was solved by
changing to an overseas computer or program for an engine that didn't
have a catalytic converter. Since the change the engine has been
trouble free. before the change the only problem was high fuel
consumption and less power. If I remember all from my visit with the
doc this spring. There's another Sea-Bee getting converted in
centralia this winter.