Rotating assembly

I ran a K-1 crank with Comp Star rods in my 408 with no issues. The crank measured good everywhere and I wouldn't hesitate to use another one. I'd use Scat before I used Eagle. If you are looking at 4.00" cranks I recommend using either 2.100" or 2.000" rod journals and a 6.125" rod with .927" pins, shelf pistons are available.