Bad things happened from '72 when the Muskie laws really bit on these muscle cars. 350CIDs were down to less than 180 horses by '73. Bill, like you I always preferred the small block; the big block was a rough motor because of unequal intake porting between alternate cylinders, but like all Chevys the oiling system was magnificent......
These days I drive an MX83 Toyota Cressida, just 180 CID, but I have to say it's the probably the best auto engine I've ever owned. Recently I bought a 900 Hornet Honda, and it's motor is a pearler too; pulls like a truck from 2000 rpm and absolutely incredible throttle response. Reasonable economy, too.
Cheers,
Hugh