383 / 432 Mopar stroker short block cost & build

The Scat forged crank counterweights hit the engine block cylinder bottoms, and they hit the piston pin bosses also (when using the shorter 383 rods). Cutting .10 inch off all the counterweights fixed the interference issues, and still left plenty of material on the crank for balancing the rotating assembly when using OEM forged connecting rods, either 383 or 440 rods. Should be ok also when using the heavy H-beam rods, as the photos I’ve seen with H-beam rods required only one or two holes drilled in each counterweight.
The rotating assembly was internally balanced.

As the crank was rotated, the connecting rod nuts bumped the bottom of each engine block cylinder. Grinding a small notch at each contact location fixed the problem.

The crank main bearings did not need chamfering to clear the Scat crankshaft main journal fillet radii. All the connecting rod bearings required chamfered and offset locating to clear the crank rod journal fillet radii. I believe 440Source sells chamfered rod bearings, and I would buy those next time around to save hassle and time.

The 1969 OEM crankshaft harmonic balancer fit the Scat forged crank, and only required two small nips with the end of a drill to neutral balance.