“The 1954-62 valve covers with oil fill in the center are for cars, oil fill in front is found on trucks.”
That’s similar to what Jerry said above. I *do* know the air filter is substantially larger in a car vs a truck, so GM probably had to move the filler cap to get out from under it.
RdsLessTaken, thanks for posting the pic of various valve covers. I’ve seen it before but forgot about it.
