For those that have used either a 440 source or Monlar 4.25 crankshaft in a 400 block, did you have to Chamfer the main bearings? If you didn't, who's main bearing did you use?
I used Molnar crank and rods in my 400 block and did not have to chamfer bearings. I used Clevite P series 876p full groove bearings. Everyone said i would have to chamfer, but i seen no issues on assembly or now with 4 seasons on the motor.
