My tired little 318 at the races!
Your Bog Might Be The Secondary Air Door Opening To Early Or To Late. A Easy Way To Find Out Is To Disconnect The Secondary Linkage And See If You Still Have The Bog. The Only Way I Know To Adjust The Air Door On A Eddie Carb Is To Pull The Top Off And Either Grind Off Some On The Weights(opens Faster) Or Addsolder To Them (opens Slower). If It Was Me I Would Buy A Nitrous Kit And Spray With A Progressive 200 Shot Hitting It Just Pass The 60ft And Blow The Chevy Guys Mind! And If He Asks Just Tell Him You Still Havent Got The Carb Thing Figured Out! Paint The Soloniods Black And Hide The Line!