Quote:
Originally Posted by estout81
289 and 302's have a problem with modern gasoline??? Please explain.
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Head and valve problems are very common with the early 289-302 engine's.
Ford switched to value engineering when they migrated from hardened valves and seats in '53. The problem got bigger with the small block Fords. I had several in my company fleet that were done at 40k. I have a '56 T-Bird with a 68 302, heads were toast at less than 40k.