{"product_id":"s-s-48-64-crankcase-assembly-std-bore-natural","title":"S\u0026S, 48-64 crankcase assembly, STD bore. Natural","description":"For use with a ''tin'' (metal) primary housing. S\u0026amp;S Superstock™ crankcases; made from 356-T6 aluminum; are much stronger than the OEM case. OEM cases can\/may break in high performance or even stock applications; like more than a few of us found out the hard way. These S\u0026amp;S Superstock™ cases can be used for both stock replacement and racing applications. Important to the engine builder are the substantial savings in labor when using S\u0026amp;S cases. These cases come ''set up'' with sprocket shaft Timken main bearing races and cam needle bearings installed and pinion shaft main bearing race pressed in and line-honed. Additional parts that are supplied include Timken sprocket shaft bearings; cylinder studs; nickel plated case bolts; crankcase fittings; oil pressure sensor; timing \u0026amp; magnetic crankcase drain plugs and a special S\u0026amp;S design alternator stator plug clamp screw. The flywheel scrapers are machined to match the original 8-1\/2\" diameter flywheels. S\u0026amp;S cases maximize crankcase oil scavenging efficiency by using a ''ported'' design breather passageway. S\u0026amp;S cases are clearanced up to and including 5\"; no additional clearancing for strokers will be necessary. S\u0026amp;S cases come complete with assembly instructions.   Note: S\u0026amp;S crankcases for 36-54 Knuckle and Panhead models will not take OEM flywheels; pinion or sprocket shaft since late style (1955-up) Timken bearings are used in all S\u0026amp;S cases. 55-up shafts will not fit 36-54 OEM flywheels; S\u0026amp;S does not recommend machining 36-54 flywheels t\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e 48-64 Panhead with steel primary (NU)\u003c\/p\u003e","brand":"S\u0026S","offers":[{"title":"Default Title","offer_id":54307923722567,"sku":"512348","price":2605.44,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/7812\/0519\/files\/512344k_34df8402-a892-4371-99ed-da35f479112a.jpg?v=1784486289","url":"https:\/\/www.chopperessentials.com\/products\/s-s-48-64-crankcase-assembly-std-bore-natural","provider":"Chopper Essentials Co.","version":"1.0","type":"link"}