front crank seal leaking on the 300hp 69. Thought I'd do it the right way. Took pan off to my surprise a 4-bolter then off with the front cover and what do I see, an aluminum gear that should have plastic teeth on it, a chain swinging in the breeze an oil pan and pump pickup just loaded with plastic pieces. Sometimes I guess it's best to do things the right way
The passenger car engines in those days all used the aluminum cam sprockets with nylon teeth but the pickup and larger engines came with the better iron sprockets. Just feel good your timing didn't slip and bend your valves.