What 7secondchevelle has up for your consideration is a new set of 8 Clevite 77 CB-663 HX connecting rod bearings that has been coated with HM-30 dry film lubrication which now makes them CB-663-H. These no longer have the extra clearance. These are chamfered for radius clearance but do have not dowel holes. Fits 302, 327, 350 and 400 large journal small block Chevy engines. Please do your research before bidding. Sold as is. Please read: No shipping to P.O. Boxes or APOs. Must have physical address. I do not ship directly out of the USA. You can use eBays global shipping system if needed. I will not be held responsible for non or under insured items. Local pickup is always OK. Please email with any questions or for any additional information. Thank You and God Bless.