[b-man]

Your heads are mismatched by casting number only.

140 is from a 1967 326 9.2:1 compression.

094 is from a 1966 326 9.2:1 compression.

Valve size for both heads are the same 1.92”/1.66”.

Rocker arms and pushrods are the same for both engines.

1961 - 1967 early used the same rockers, other than some 1964 and earlier had no spurt hole in the rockers (rocker stud oiling).

1967 late through 1981 used a different rocker than the earlier engines. 1967 low-performance heads (20 degree valve inclination) and high-performance (14 degree) makes things a little confusing because it was a transition year. The different head designs used different rockers and pushrods.