I know several guys that have had issues with Eagle crankshafts and connecting rods in FE engines, but I must say, the cast 3.25" crank, and Eagle rods, in my old 331 SB Ford , has hundreds of mid-low 10 second 1/4 mile passes, shifting at 6800 RPM, and hitting over 7000 across the finish line, with zero issues. And according to the guy that bought the engine from my a year and 1/2 ago, it is still running fine. That said, a buddy did have a Scat 3.25" cast SBF crank that ate the thrust surface after a couple of years of racing. I still wouldn`t trust Eagle stuff in a FE, but for a SB Ford, I would consider them.