Blower back fire.
I am having a problem with my 426 cube inch motor . the motor has a bds blower systems with two 650 carters on top . W hat is going on is at an idle the motor run fine . Once I drive the car on the street i get passed one third throttle the motor back fires in the blower . I have retarted the timing to 32 d. total still have same problem . Also I have installed a HUASE FUEL PUMP . I STILL HAVE THE SAME .Help there must be some one out there that has run into this problem .