$50 million to produce...

If it was 1964 they would have sorted the lifter to pushrod angle.
Its was mid 50's and the block was designed for the Poly engines.

The so called LA LIGHTWEIGHT block was only slightly altered for the 1964 273.
Once you spend 50 million you can't do it again, so every LA block has pushrod mis-alignment ever since... :mob:

408 pushrod angle.jpg