Got a 86 Elco that vibrates around 60 mph and theres a whining that sounds like its coming from the trans that gets faster with more speed. I put a custom ford 9" in it with 3:70 gears, new lower and adjustable upper control arms. When i put degree finder on trans yoke seal it reads 2.5 degrees down toward rear end. The rear end yoke reads 2.5 degrees up towards trans. When i put degree finder on drive shaft near the rear end it reads 4 degrees angling up toward trans. Is this somewhat close or way off. Also the end play on the trans yoke is 1.5 " can this cause vibrations cause im reading on posts it should be 3/4 to 1". Any input would be appreciated
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