So my 86 SS, got it back from mechanic and it drives great in overdrive. I noticed today he never hooked my lockup kit up and I’ve been driving everywhere and on the freeway in overdrive. #nosuchthingasastupidquestion... how should I be driving my SS without causing harm to it and do I need that lock up kit hooked up ASAP? Running with no computer. Thanks in advance.

There should be no ill effects of running without lockup other then a loss of a little mpg.
Bob

If you have a 1982-83-84 GM car or truck with an overdrive transmission never drive it with the wires on the side of the transmission unplugged. This will overheat the transmission on a long trip. On a 1985 or later it is O K to have the wires unplugged, because of a design change made in late 1984. The only part of this transmission that is electronic is the torque converter lockup. You will still have all four speeds with the wires unplugged.

If you have a 1982, 1983 or early 1984 transmission (27 spline input shaft) it can be replaced by a 1987 up transmission for a better feel. The wires don’t have to be hooked up on a 1985 up transmission. This works well on the early S-10 Blazer, because when they get old it will rattle when the torque converter locks up. On 1982, 1983 and early 1984 transmissions the transmission will burn up if the torque converter doesn't lock-up.

This only applies to 700-R4, not 200-4R transmissions.