I have three old trucks i try to maintain to no avail; these are the other
two: I have an 83 Chevy 4x4 half ton truck and an 89 K5 blazer; both have 2
in lift and 33 in tires, and for some reason, around 45-50 or so, they both
have a slight methodical shake..it doesn't do it if you accelerate fast
enough, but if you hover in that speed it continues to do it; both of them
do it; and the 83 has axles from a 78 4x4 i had and it did it as well, so it
must be in an axle i think; cause the 83 didn't do it before the new (or at
least new to it) axles were put under it.