Head & cam selection...346 iron w/solid roller or Indy EZ w/XE285HL

346/902/452 heads with big valves flowing in the 280 range aren’t too bad.
906’s & 915’s take a few more hours because of the intake short turn.

That’s about my limit for those things these days.

Fortunately....... most people aren’t interested in paying what it costs to have me do that...... so those jobs are few.