My Dad was driving flatheads up until the mid '70s, and my Mom was driving a Y-block '62 Galaxie till the mid '80s. When the Galaxie wore out, Dad switched her to a 170ci '61 Falcon. Dad was never into the performance thing, so I never drove anything with power until I got a 390 Fairlane just out of high school. I did experience a couple of Cleveland engines while in school, one in a '71 Torino, another was a '71 Boss Mustang, and BOTH of those cars RIPPED! Man they screamed! We had 460 powered station wagons (boats!!), but that 390 hooked me on FE V8 performance.
A classmate/friend of mine had a '68 Super Bee with a 383, then traded it for a '70 Cuda with a 440, both while still in high school. Those cars hooked me on big block performance, and I still like big block Mopars to this day. That Cuda was downright scary, and with 2.70 gearing it would have you begging for mercy at top speeds of around 150mph.
I think we're all lucky to have lived to the ages we are now..lol