Clevite 77

CB745HN20

Clevite CB745HN20 Rod Bearing

EAN: 0027067538819

UPC: 027067538819

Bearings

CLEVITE CB745HN20 CLEVITE77 CB745HN20 H SERIES ROD BEARING

GeneralMotors Clevite H-Series 77, Tri-Metal Connecting Rod Bearings fit the following:265 CID 4.3L Chevrolet V8 cylinder 1955-1957 (High Performance),283 CID 4.6L Chevrolet V8 cylinder 1957-1967 (High Performance),302 CID 5.0L Small Journal Chevrolet V8 cylinder 1967 (High Performance),327 CID 5.4L Small Journal Chevrolet V8 cylinder 1962-1967 (High Performance).NOTE ALL: H-Series Performance, Narrowed On One Side For Increased Crank Fillet Clearance, No Dowel Hole In Cap Half.Clevite HN-seriesbearings will be narrowed in place of the enlarged chamfer to provide greater crankshaft fillet clearance. The new narrowed bearings will be available with a HN suffix.Clevite Connecting Rod Bearing part number: CB745HN20 (0.020in. / 0.50mm Oversize)These bearings are identified by a letter H in the part number suffix. Part numbering is based on the same core number as the standard passenger car parts for the same application. These bearings were developed primarily for use in NASCAR type racing, but are suitable for all types of competition engines.H series bearings have a medium level of eccentricity, high crush, and rod bearings have a hardened steel back and thin overlay. These bearings also have enlarged chamfers for greater crankshaft fillet clearance and are made without flash plating for better seating. Bearings with .001 extra clearance are available for standard size shafts and carry the suffix HX (X = extra clearance). Rod bearings are available with or without dowel holes (HD = with, H = without), main bearings are available with standard 180 degrees upper half grooving and with full 360 degrees grooving (H = 180 degrees, HG 360 degrees). Use H series bearings with crankshafts that have oversize fillets and where engines run in the medium to high RPM range. H series bearings should be used if contact patterns obtained with P series parts are too narrow. Contact pattern

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