I have a pretty fresh 1966 200 with a 252 cam, raised compression, 1100 carb and a c4. I got the carb tuned to perfection(well as close as I could). Then I swapped a ford 8" in with 3.25 gears instead of the 2.83 it was born with. All new V8 drums all around along with wider 21570r14 tigerpaws. I don't really notice a difference with the new gears. Now when I stomp it she stalls. Before with the old tires they would squeal a bit. Retune the carb necessary after a rear gear change? More accelerator pump shot?