Another chronic failure item on 265's (and small block Chevy engines in general) was cam bearings. After an in the frame rebuild the 265's started getting a flickering oil pressure light at hot idle- - - -too much wear at the cam bearings to keep the oil pressure above 7 PSI. In the late 1950's when the problem started showing up, Melling hadn't started making high volume pumps for Chevy V8's.

Ditto on the cracked piston skirts on 265's and early 283's- - - -I've changed a BUNCH of them! The Invar anti-expansion struts would break away from the main skirt casting, sometimes 3 or 4 in one engine.
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!