Quote(tonyfreeman): You have to remember that in those days there were no electronic timers ... it was all done by stopwatches. The accuracy would always vary depending on the operator. I remember that it was not until the early 80s that we were able to have light beams and electronic timing.....(unquote) I don't know why it is that some guys insist on holding the floor when they have little or no idea of what they are talking about but you for one need to brush up on some facts. Read on: Quote Wikipedia on Drag Racing: Electronic timing and speed sensing systems have been used to record race results since the early 60's. Note: I myself started drag racing in 1972 - the year when A.I.R. opened its gates - so I should have first hand knowledge of that sport.