Good morning Gang:
My car had GM fender flags, like this. . .
Same size as 396/427 emblems - large flags but no "427Turbo-jet". . .
May have been big block '67 Impala flags.
You could tell it was a V8 but no mention of cubic inches . . .
No hint of anything 'special' under the hood . . .
When asked about the motor back in the day, "just a stock V8"