In the process of prepping for Eagle Field, I attempted a quick tune up on my tow vehicle; a mild custom '55 F-100 with a 302/C4. I found two dead cylinders, very low compression apparently due to burned exhaust valves. So off came the heads. I couldn't believe my eyes.... It looks like they put 260 exhaust valves (1.39" valves) in 302 heads (1.45"). They are sunk an average of .090". I had a spare set of heads in stock so I disassembled them for inspection, lapped the valves and stuck them on. I also took the opportunity to upgrade from the crappy Ford manifolds to a nice set of stainless shorty headers. So far so good, I got my good old workhorse back. Has anyone else ever pulled apart an engine, trans or rear end to find someone else's finest work? Have pictures?