[D. Hake 4459]

I'm with Paul in post #2. Jim Hale could be a big help on that combination. His '64 Sport Fury can run those times in G/SA at about the same weight. I wouldn't expect him to give away all his secrets but he might point you in the right direction. I don't know how tall of a tire you have on there but that seems like a lot of rpm for 122 mph. Converter slippage?