Clevite 77

MS1038H1

Clevite 77 MS1038H1 Main Brng Set

EAN: 0027067547354

UPC: 027067547354

Main Bearings

Amazon_Data

General Motors Clevite H-Series 77, Tri-Metal Main Bearing Set fits the following:400 CID (6.6L) Chevrolet V8 cylinder 1970-1980 (High Performance).NOTE: Engines Using 400 Crankshaft, H-Series Performance, Grooved Upper Halves Plain Lower Halves.Clevite Main Bearing Set part number: MS1038H1 (0.001in. / 0.026mm 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 main 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).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 patterns should ideally cover 2/3 to 3/4 of the bearing surface. See accompanying contact pattern diagrams. If you arent sure which type of performance bearing to start with, the H series bearing will be your best choice.Please note: Some H series bearings will no longer be available with enlarged chamfers. Instead, the bearings will be narrowed in place of the enlarged chamfer to provide greater crankshaft fillet clearance. The new narrowed bearings will be avail

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