For informational purposes, I did a little research on the current starting TEs in the Big Ten. Height/weight/40 as a recruit is taken from Rivals, while current height/weight is taken from each team’s official roster. Weight gain expressed a percentage.
Illinois – Evan Wilson (So.)
Then: 6’6”, 225, 4.69
Now: 6’6”, 250 (+11.1%)
Indiana – Ted Bolser (RS So.)
Then: 6’5”, 212, 4.63
Now: 6’6”, 245 (+17.5%)
Iowa – Brad Herman (Sr.)
Then: 6’5”, 220, 4.59
Now: 6’5”, 255 (+15.9%)
Michigan – Kevin Koger (Sr.)
Then: 6’4”, 235, 4.65
Now: 6’4”, 258 (+9.8%)
Michigan St. – Brian Linthicum (RS Sr.)
Then: 6’4”, 217, 4.72
Now: 6’5”, 245 (+12.9%)
Minnesota – Eric Lair (Sr.)
Then: 6’3”, 210, 4.56
Now: 6’3”, 232 (+10.5%)
Nebraska – Kyler Reed (RS Jr.)
Then: 6’3”, 204, 4.5
Now: 6’3”, 230 (+12.7%)
Northwestern – Drake Dunsmore (RS Sr.)
Then: 6’3”, 209, N/A
Now: 6’3”, 235 (+12.4%)
Ohio St. – Jake Stoneburner (RS Jr.)
Then: 6’6”, 223, 4.46
Now: 6’5”, 245 (+9.9%)
Penn St. – Andrew Szczerba (RS Sr.)
Then: 6’6”, 265, 4.8
Now: 6’6”, 266 (+0.4%)
Purdue – Gabe Holmes (So. – Grayshirt?)
Then: 6’6”, 210, 4.8
Now: 6’5”, 247 (17.6%)
Wisconsin – Jake Byrne (RS Sr.)
Then: 6’5”, 240, 4.6
Now: 6’4”, 260 (+8.3%)
It is remarkable how consistent the weight gain is among nearly every player. Almost every player gained somewhere between 8 and 18 percent of their HS body weight. It is also remarkable how close the mean and median weight gains are:
Mean weight gain: 11.6%
Median weight gain: 11.75%
If Johnson were on the field and starting right now, he would currently be the tallest, and tied for the ninth-heaviest, tight end in the conference. Keep in mind that nearly all of these players have been on campus for 4 or 5 years, meaning they are mostly 22-23 years old. Johnson is, presumably, 17 or 18 years old. Though none of the 40 times listed are accurate, notice also that he would be tied for the slowest 40 time in the conference among starting TEs. Further, given the fact that some players fudged their height (unless they somehow shrunk when they got to campus), it stands to reason that they may have fudged their weight as well. Johnson might be, too, but it doesn’t appear so from the film I’ve seen and the people I’ve spoken to. He appears to be a legitimate 245.
At any rate, if we take all of the above at face value, and assume an average weight gain for Johnson, here are his stats:
Now: 6’7”, 245, 4.8
2015 (RS Jr.): 6’7”, 273-274 (mean-median)
Jim Kleinsasser is considered exceptionally heavy, even for an NFL TE, and he is 6’3”, 272.
Of course, it is possible that he could be like Szczerba and not really gain any weight. However, that is unlikely and, at any rate, Szczerba is not a TE to aspire to. It’d probably be more accurate to call him a sixth starting lineman for Penn St.
Keep in mind, also, that all of the above players are training for speed as well as strength, thus limiting their growth. If Johnson set his mind to becoming an elite LT, and trained primarily for strength, size, and quickness like they do, he could easily be well over 300 by the time he’s a senior.