1976 Overhaul, 1100 Hours..Pass???/

wrote:

I might ask them to pull one or two of the jugs and have a look at the
cam. Is that typically a part of pre-buy???

No, that's not normally part of a pre-buy.

George Patterson
Give a person a fish and you feed him for a day; teach a person to
use the Internet and he won't bother you for weeks.

Perhaps if in a darkened area, drop a small light thru both spark plug
holes of each cylinder and see if there is any sign of cylinder wall
corrosion & that the valve openings seem normal. It would be better to
check in the rocker box covers though that is another level of
invasiveness. I agree jug removal only after a sale.

Reasonable oil consumption, clean plugs and a successful oil analysis
I'd think could confirm a reliable engine.

Assuming an O-320E2D with reasonable care, has there ever been any
engine more bulletproof?