I recall you mentioning it here and how you weren't exactly kind to it (lol) but, for me, there's a sentimental attachment to the 260. It's a dumb story. The other thing is that I have to "process" the 307 as the Olds Rocket 5.0 L V8 because the 307 was an "old school" Chevy small block V8 slotted in between the 283 and the 327.
The funny thing is that, when the 260 V8 was released, the base engine in the Cutlass Supreme and the Omega - coupes and sedans - was Chevy's in-line 250 6 cylinder. Only the Salon - not even the Brougham - started out with the 260 V8. Eventually, my parents picked up a lightly used Omega (sharing the Nova-Ventura-Skylark chassis) with the 260 V8, so we also had one as an extra car for the dog and more utilitarian tasks. One of my friends called it the "priest's car," because it was plainly equipped and looked like it would be seen next to a rectory or the nuns' residence. My dad said, "Tell your friend I ain't no priest," (albeit in Italian).
Our neighbors got close to 150,000 miles of mostly city driving in SoCal on the large Olds Cutlass Supreme coupe with a 260 V8. They were paired to a THM 350 transmission. Then, when they went over to the smaller '78s and beyond, they paired the 260 V8, and the other engines that were available, to the smaller and unreliable THM 200 ... and transmission failure was common.
I was handed down an '84 Supreme Brougham coupe with the 3.8 V6 - and that crappy transmission - and it failed at 129,000 miles. It was not maintained, with the transmission fluid looking light brown instead of pink. I then took it in to get the transmission redone and this cool Portuguese guy owned the shop. He gave me a price for the new transmission. I asked if I could have a THM 350 put in instead and he seemed amenable to that, since the length of the casing was exactly the same. He only charged me $100 to $150 more and it was worth its weight in gold (well, not really).
I guess the moral of the story is that when you pair a smaller engine (3.8 V6 or 260 V8) to a larger transmission, the transmission snoozes with the lower torque being pushed through and it's a win-win for the powertrain. At least it appears that way.