Nonsense!
The ‘65 coup was a 271 HP that easily hit 140.
Had a 350 too later, that exceeded the limit of its speedometer at around 172 MPH.
It mostly depends on the rear gears, not the horses. Even the 225 HP V8 would exceed 115 MPH with .323 gearing.
Really ...
Even the new 350 with almost twice the hp will barely do that.