Jay interesting info on the carbs. Do you have a spacer with a 4 hole setup you can try? The other question is a smaller carb of the double feed, double pump in the 780cfm range. How much power would you loose. I was reading the Engine masters and the guy that won the 510 event was not running a large carb. I know a limited rpm range but is there not a magic number for vacuum at WOT. Guessing about 1.5-2.5 psi of vacuum. Where is the dyno mule coming in at? Good info looking forward to the book when this is all done. Thank your friends for the extra hands to help with all the testing you are doing. Hope you and the family had a good Christmas. Looking forward to the big cammer rocker arms being fixed for the new year. Rick Lake
