Been thinking about swapping to a 351 but I am wondering is the 302's radiator big enough for a 351? Or are they the same size and no need to worry about it?
There are different "sizes" based on the truck package. For example, a 302 xl will have a 2 row radiator (I think). If there is a tow package, its a 3 row (I think). Living in AZ, if your radiator is the thin stock XL radiator, you can probly use it through the winter but keep save some money, keep a real close eye on it come summer time and be ready to replace it. It would benefit you either way to get yourself a numeric temp gauge so you can tell what temp you are actually running...