I will answer for you 79 top 10, 90 24. Neither season had 4 losses. We finished ranked outside the top 10 7 times in 25 years with TO. We have finished ranked outside the top 10 every year with Bo. Seems like we let our expectations slip a bit
Both seasons only had 12 games, and a schedule like we have now.
And by the way, the year in the seventies you need to look at is 1977. That's the year that we went to the Liberty Bowl after OU smoked us. Osborne was given an ultimatum. Win the bowl or youre out. The next year he finally beat OU. And quit comparing rankings. Top 10 in the 1970's didnt carry half the weight as it does today.
In 1990, we lost to both the split national champions. And a mediocre OU whooped our a$$. Lost the last two games a combined 90-34 (TO never got blown out *rolls eyes*). Colorado scored 27 unanswered 4th quarter points to win 27-12, so that might as well have been a blowout. Finished the season ranked 17 and 24. 9-3.