Originally posted by bnoon:
They aren't numbered as 1, 2, 3, 4, etc, but they do have measurements stamped on them IIRC.




They are all numbered. On a 2.5L the LH head cam caps will be numbered 1L, 2L, ...9L. The RH caps will be 1R, 2R,...8R. LH head has one extra cam cap on the intake cam for water pump drive.

There are no measurments stamped on the heads.