ddieni82

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hi all im new to this so bare with me....i bought an 88 gt today from nh and was drivung it home to ct about 2.5 hours....drove fine for about 2 hours then all of the sudden temp gauge went from 160 to 250(15 min span) and shut car down after motor started making noise.....got it to a gas station some how.....let it sit for a while coolent was not in sight in the fill ...so filled to cold level car started and had some white smoke coming from tail pipes drove a little further and started blowing maybe coolent from oil fill cap with decent pressure for about 1 min.....let sit for 30 min motor was about 150f and started fine and no smoke....but had it towed anyway just in case....any ideas whats going on?

thanks all for your help