Over Heating on 1990 Toyota 4Runner

My 1990 runner blows alot white smoke when it gets hot. i just had my heads re-done. so i haven't blown a gasket. could it be my radiator or my hoses or what?

Asked by for the 1990 Toyota 4Runner
Often a serious overheating problem will damage the oil control rings causing it to allow oil into the combustion cylinders. This will be blue grey colored smoke out the exhaust pipe. Toyotas are great but the 1990 4Runner did have head gasket problems. Were the cylinder heads pressure tested for cracks when the heads were off. I'll send you an article I wrote on cooling systems maybe it would help answer some questions.
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