at one point my ford friends were bugging me to see how fast my truck(84 pickup) would go. so one day on the open interstate we did. supposedly i was going 110. the Ole 22R/G52 were pretty wound out but the did it. i didn't notice too bad of a wobble. also recently before i threw a rod in the RE i put in that same truck, i was going about 70-75 maybe 80 and i could feel some vibration but i think it may have been a warning that my 4th cyl rod was not doing so hot or something. not saying that's wrong with your truck though. that engine had been hydrolocked twice, once with the HG blowing and me getting water in the oil.