I believe these King Tri-Metal bearings to be the best bearings available for our engines. As with any bearing, it is important that proper clearances are achieved. The factory had a tolerance range for the bearing housing bore as well as for the crankshaft journal so clearances can vary slightly even when everything is within factory spec. According to my measurements, the King Tri-Metal bearings have a slightly thinner wall that the AE/Glyco bearings so they will result in slightly greater clearance. While this is generally desirable in a race engine, depending on the tolerances in the engine, it may result in greater clearance than desired for street use.
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