First, the 60's are a difficult time to analyze because from 1962-1967 the AP Poll (one of my favorite metrics normally) only included 10 teams.
It is interesting to me that you considered Michigan elite starting circa 1967 because at that time and leading up to it:
1967: Michigan was not ranked in any AP Poll and finished 4-6
1966: Michigan was ranked 9th and 8th respectively in the first two polls then lost three straight and never got back, finishing 6-4
1965: Michigan was ranked 4th, 4th, and 7th in the first three polls then lost four straight and never got back, finishing 4-6
1964: Michigan was unranked in the preseason and again in one poll (immediately after their loss to PU) but other than that they were ranked all year finishing 9-1 and #4 with a RB win over Oregon State
1963: Michigan was not ranked in any AP Poll and finished 3-4-2
1962: Michigan was not ranked in any AP Poll and finished 2-7
1961: Michigan was ranked in a couple early polls and received votes in the final (pre-bowl) poll. They finished 6-3
1960: Michigan was not ranked in any AP Poll and finished 5-4
1959: Michigan was not ranked in any AP Poll and finished 4-5
1958: Michigan was ranked (barely, high-teens) in three early polls but finished 2-6-1
So in the decade prior to when you were first aware of the national picture, Michigan had been nationally relevant once. If you go back even further, Michigan's RB winning 9-1/#4 season in 1964 was their only season with less than two losses between their undefeated season in 1948 and Bo's second year of 1970. Ie, from 1949-1969 Michigan was nationally relevant in one out of 21 years.
It is interesting that Michigan's improvement actually started in 1968 (Bump Elliott's last year). In 1968 Michigan was ranked almost all year peaking at #4 in the 11/11 and 11/18 polls before getting drilled 50-14 by #2 Ohio State on 11/23. Still, they finished 8-2 and #12.
In 1969 the Wolverines were:
- Unranked preseason*
- got into the Poll after a couple early wins (Vandy, Washington)
- fell back out after a bad home loss to #9 Mizzou
- got back in after a win over #9 Purdue on 10/11
- fell back out after a loss to unranked MSU on 10/18
- got back in and climbed to #12 with wins over MN, UW, IL, and IA (all finished .500 or worse)
- jumped to #7 with a win over #1 Ohio State
- lost the RB and finished 8-3 and #9
Then Michigan became almost super-elite. From 1970-2007 they were:
- #1 in AP Poll appearances with 560 (91.7% out of 611).
- #2 in AP top-10 appearances with 356 (58.3% out of 611).
- #3 in AP top-5 appearances with 207 (33.9% out of 611).
So for the 38 seasons from 1970-2007 the Wolverines were ranked in about 9-out-of-10 polls, top-10 in about 3-out-of-5 polls, and top-5 in about 1-out-of-three polls.
Comparison, from 1949-1967 they were:
- #13 in AP Poll appearances with 82 (36.8% out of 223)
- #16 (tied with UMD) in AP top-10 appearances with 51 (22.9% of 223)
- #17 (tied with Ark and ILL) in AP top-5 appearances with 24 (10.8% out of 223)
Those figures from 1949-1967 show how "not elite" they were.
*Above I noted that the Wolverines were unranked to start the 1969 season. I think this demonstrates that they were NOT really a helmet at that time. They got as high as #4 in 1968 and finished #12. Helmet teams that get as high as #4 and finish #12 ALWAYS start the next season ranked. Michigan didn't because they weren't.
It's not the case that I considered Michigan elite in 1967, but that by the time "Michigan" impinged on my consciousness, they were at least climbing toward that status.
The first time I really looked at the polls was at the end of the '67 season, in which #3 OU beat #2 Tennessee in the Orange Bowl. The polls that year were all pre-bowl, so I was wondering how OU would have been ranked had their been polling after the bowl games. It did not make any impact on me that Michigan was not only not among the 10 ranked teams, but had finished 4-6.
But the next year Michigan
was good, and starting in '71 Michigan and Ohio State played in a string of games in which it seemed like the first team to score 13 points was going to win. Then OU played Michigan (who had lost to Ohio State 21-14) in the Orange Bowl after the '75 season. (I was disappointed that Michigan wore white pants in that game.) Without going back and examining the history, and even while I was aware that Michigan State had played Notre Dame to a 10-10 tie in 1966's GOTC, it just seemed like it was the norm that Michigan and Ohio State always played in the last game of the season for the Big Ten championship, and that the score in that game was likely to be something like 13-10.
Maybe the fact that my fraternity got a visit from our national director, a Michigan Man who taught us "I Want to Go Back to Michigan," and that the Pride of Oklahoma played "Let's Go Blue" (renamed "Go Big Red") the next season after that Orange Bowl matchup, made me think that Michigan was a perennial top-10 program.
Those decades of Michigan futility since Fritz Crisler were before I started paying attention.
If Michigan was not a helmet team in 1969, have the Wolverines done enough since then to earn helmet status? Was Bo's run great enough, even without an MNC? Does the one split national championship in the 1990s do it?