I used to be a factory rep. for a production engine rebuilding company. When we built a 261 chev. egine we always used a crank that had ben chrome plated on the rod and main journals. We then used copper alloy bearings. We never had a bearing problem in this engine. One or two thousands of an inch of chrome is a wonderful thing on bearing journals. I once seen a 327 chev that was in a drag rail that run a .010 chrome plated crank. This engine would naturally burn out bearing on a regular basis. We would only polish the crank back to std. and he would run again. Some times we had to put the crank in a grinder to get the excess bearing material off from it so we could polish it to finish.
