You're right on the standard cams of the day; hot rodders have not changed: MORE HP OR DIE!!! LOL But I used an HE series cam that I bought in 1974 and it worked like I described, and used it because my first performance build was in the wake of the oil embargo; I was still traveling around with 5 gallons of gas in the back 'cuz sometimes, you just could not find a station with gas. I still have the cam card.