396ci Chevy Big Block - Engine-Building Tips
It is essential that all of the main journal saddles share the same axis. If they don’t, excessive friction can result at the main bearings. This can cause a drag that will diminish power output and wear the bearings prematurely. Even if each main saddle measures to the proper specification, there’s no guarantee that they all line up with each other. Align-honing mildly machines the main saddles simultaneously with a common bar, thus making certain that all saddles are aligned. Prior to starting this operation, tap and clean all main-cap bolt-holes. A flat file is used on the surface where the caps sit to deburr this area.
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