If your combo kicks back you have a weak starter a weak battery bad cables / bad connections , or a combination of those , an FE ( other than the early pre 65 engines ) have a 184 tooth flywheel / flexplate lots of mechanical advantage ,and although I never recomend it many racers use locked out timing , so they are starting with up lots more than 14 , as posted find true TDC on the balancer and be sure you weights arent sticking in the Dist , I never recomend under 2600 all in on a pump gas combo , pump does NOT like that fast of an advance and the springs used are so light that they may not pull back the advance weights if the dist isnt in perfect shape , most factory cast heads end up with totals in the 38-42 range , modern aluminum in the 32-36 range WITH THE CORRECT FUEL , If your trying to run highest possible hp numbers with pump, your playing with fire , err on the side of caution and be conservitive with your totals , BUT you MUST know your true settings finding TRUE TDC is the start or your chasing your tail and guessing wont end well