Clevite GM Pass & Trk 287 288 303 316 324 326 336 347 350 370 389 400 Con Rod Bearing SetClevite H Series performance bearings have a medium level of eccentricity, high crush, and a hardened steel back and thin overlay. These bearings are made without flash plating for better seating. Use H Series bearings with crankshafts that have oversize fillets and where engines run in the medium to high RPM range. This Part Fits: Year Make Model Submodel 1957 GMC PM151 Base 1957 GMC PM152 Base 1957 GMC PM153 Base 1975 Oldsmobile 98 Luxury 1975