hey im new to this forum. i have a 76 hondo with 455 olds in, i recently replaced the carb with a 650 holley because i thought that was the reason i was having a problem. The problem i keep having is its flooding out and wont stay running when the fuel pump is connected but when i disconnect the fuel pump and start it holding the throttle open to get rid of the flood it will start and hold idle run perfect until it runs out of gas. then i hook the fuel pump back up and it will start right up and run as long as im in the throttle but wont hold idle ive been told its timing but is there anything else that would cause this