Are you running the Chrysler linkage adapter Edelbrock sells for these carbs? I have never had an issue using stock linkage with the adapter. There are different kick down rods between small and big block and even B to RB, the carb slide bracket I believe is the same length on the big block 4 bbl engines. Small block 2bbl cars do have a shorter one. Not sure on 4bbl setups.
