TrickFlow heads. A few teaser pictures
Ok far right side column is after straightening out the common wall a little and tubing the bolt hole. I didn’t aggressively attack this area yet but will after I open it up to a 2.05 and hopefully a 2.08 valve. I gave the short-turn a little loving. (5 minutes max). You will see I lost cfm here and gained there. I feel this head is begging for a 2.08 valve. TrickFlow did such a good job of maximizing a 2.02 valve on this head.