I know back in the sixties one of the most feared sleepers was the Pontiac Catalina 2+2 421 Super Duty with a four speed. 1962-1966. They'd pull 13.8 quarter miles and 3.9 second 0-60 times. Remember this was in a 4,400 pound car with skinny bias ply tires.
Those numbers don't work, lol. A 13.8 doesn't give you a 3.9 second 0-60, 3.9 seconds is well into the 12's and 0-60 is more about coming out of the hole (traction) which 60's and 70's cars were notoriously bad for due to the tires of the day. This was also reflected in 1/4 mile times, which, if you were struggling to get out of the hole and still managed to do it in 3.9 seconds, you'd be low 12's or into the 11's with a wickedly high MPH.
Looking it up, the car, at its fastest, was actually 5.4 seconds 0-60 (much more realistic):
1962 Pontiac Catalina (MT)
421ci/405hp, 4spd, 4.30, 0-60 - 5.4, 1/4 mile - 13.9 @ 107mph
Later years didn't do as well:
1964 Pontiac Catalina (MT)
421ci/370hp, 4spd, 3.42, 0-60 - 6.6, 1/4 mile - 15.7 @ 93mph
1965 Pontiac Catalina 2+2 (CL)
421ci/376hp, 4spd, 4.11, 0-60 - 7.2, 1/4 mile - 15.5 @ 95mph
Then we have:
1969 Dodge Charger R/T (MT)
440ci/375hp, 3spd auto, 3.55, 0-60 - 6.1. 1/4 mile - 13.9 @ 101.4mph
1969 Dodge Charger 500 (HR)
426ci/425hp, 4spd, 4.10, 1/4 mile - 13.48 @ 109mph
1969 Dodge Charger 500 (CL)
426ci/425hp, 3spd auto, 3.23, 0-60 - 5.7, 1/4 mile - 13.92 @ 104.5mph
1969 Mustang Boss 429 (HPC)
429ci/375hp, 4spd, 3.91, 0-60 - n/a, 1/4 mile - 13.34 @ 107mph
The big HEMI's (Dodge and Ford) were definitely the highest performing stock offerings of the late 60's.