60 over bore

I haven't had any cooling problems. I have an upgraded Factory type rad and a victor water pump now but I just had a stock water pump and normal rad and it ran fine, even at the track.

I hear, "your engine is 0.060? Your going to over heat!!"

The general limit in the 4.030-4.040 range is based on the non-uniform thickness of the cylinder walls that occurs from core shift and any other factors that affect the bore (like improper bore centering). A "perfect" block, and there will be some of these among the millions made, will have uniform cylinder walls that will permit a larger over-bore without achieving a too-thin wall thickness at one or more sections of the cylinder wall. This must be the case for all cylinders.

Like said above, if the block was sonic checked and deemed to have enough wall thickness, then you may be fine. Be aware, however, that thinner bores will distort more easily as the engine heats/cools and ring seal may not be as good as a new or 4.030 block. If your car is a "cruiser", it probably won't matter.

The 302 that was in my coupe was bored .060 and went over 100k miles like that. I guess it was a good block.

There are probably a lot of old blocks like that. But Ford has to take into consideration all of its blocks, even those far from the ideal. Glad yours was good.