MAIN BEARING SET 318-340 :: M77-MS540P20

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Clevite 1957-1973 Blocks, Narrow Flange 3.374" -1/2 Groove Tri-Metal

This is a full set for a V8 engine.

P-Series main bearings are the oldest members of the Clevite 77 bearing family, and are intended for high-revving engines. To compensate for the high load factors and distortion in these engines, they have higher eccentricity and a high crush factor. P-Series bearings are built on steel backings with extra-thin overlays, to prevent overlay fatigue. In addition, the oil grooves on most applications extend all the way around both halves for better oiling.

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