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These Clevite bearings are the exact high quality bearings that we use in our own engine builds.

Suits Small Block 273ci 318ci 340i

A little about Clevite 77 bearings:

Clevite 77 P-Series are one of the most tried and tested members of the Clevite 77 performance-bearing family. They're intended for high-revving engines, especially those where the high rpm cause the rod bores to narrow. To compensate for this distortion, they have higher eccentricity and a high crush factor. P-Series bearings are built on hardened-steel backings with extra-thin overlays, and their oil grooves extend all the way around both halves for better oiling. Lower sections have dowel holes for use with aluminum rods, and there are extra-clearance variations available with an additional 0.001 in. of clearance.
gh lubricity and low friction reduces potential damage from interrupted lubrication