{"product_id":"kb-performance-kb160-040-pistons-17cc-domed-piston-set-for-big-block-chevrolet","title":"KB Performance KB160.040 Pistons +17cc Domed Piston Set for Big Block Chevrolet","description":"\u003cp\u003eFor a 396ci engine, use part number 648-KB160.STD.\u003c\/p\u003e\u003cp\u003eThis will be a .030 over bore 396ci.\u003c\/p\u003e\u003cp\u003eOn a 96.5 head (Closed chamber head), the compression ratio will be 10.3.\u003c\/p\u003e\u003cp\u003eTechnical Specs: Alloy: Hypereutectic 390 Bore: 4.165'' Crankshaft Stroke: 3.760'' Connecting Rod Length: 6.135'' Deck Height: 9.800'' Compression Height: 1.765'' Pin Size: 0.990'' Pin Location: Centered Hollow Dome Top: .180'' 17cc IV (Closed Chamber Head) Intake Valve Relief: 0.266'' Depth \/ 2.310'' Diameter Exhaust Valve Relief: N\/A Top Landing Height: 0.311'' Ring Grooves: 5\/64'' Top; 5\/64'' Middle; 3\/16'' Bottom Gram Weight: 630\/158 Compression Ratio: 10.5:1 w\/96.5cc Heads; 9.6:1 w\/105cc Heads; 9.4:1 w\/108cc; 8.5:1 w\/119cc Heads.\u003c\/p\u003e","brand":"United Engine \u0026 Machine Co","offers":[{"title":"Default Title","offer_id":51748955259162,"sku":"SLVKB160.040","price":79.67,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0975\/8942\/8506\/files\/51AFcm1yHmL.jpg?v=1772041827","url":"https:\/\/trybeepbeep.com\/products\/kb-performance-kb160-040-pistons-17cc-domed-piston-set-for-big-block-chevrolet","provider":"TryBeepbeep","version":"1.0","type":"link"}