{"product_id":"kb422-040-united-engine-machine-pontiac-400ci-hypereutectic-pistons-solid-dome-1","title":"KB422.040 United Engine Machine Pontiac 400ci Hypereutectic Pistons Solid Dome 1","description":"\u003cp\u003eHypereutectic Pistons Solid Dome 10cc 4.160\" Bore (+.040'') for Pontiac 400ci.\u003c\/p\u003e\u003cp\u003eUse with 6.630'' Connecting Rod \u0026amp; 3.750'' Crank Stroke.\u003c\/p\u003e\u003cp\u003eCompression Ratio: 9.4:1\/100cc 8\/pkg.\u003c\/p\u003e\u003cp\u003eNote: Designed to work with 1967 and later 14-degree heads.\u003c\/p\u003e\u003cp\u003ePiston is .025\" below a 10.250\" deck.\u003c\/p\u003e\u003cp\u003eCheck small end of rod to piston before assembly \/ .045\" clearance per side minimum.\u003c\/p\u003e\u003cp\u003eTechnical Specs: Alloy: Hypereutectic 390 Alloy Bore: 4.160'' Crankshaft Stroke: 3.750'' Connecting Rod Length: 6.630'' Deck Height: 10.250'' Compression Height: 1.710'' Pin Size: 0.980'' x 3.000'' Pin Location: Centered Solid Dome Top: 10.0cc 2 Valve Reliefs Intake Valve Relief: 0.239\" Depth \/ 2.140\" Diameter Exhaust Valve Relief: 0.239\" Depth \/ 2.140\" Diameter Top Landing Height: 0.300'' Ring Grooves: 5\/64'' Top; 5\/64'' Middle; 3\/16'' Bottom Gram Weight: 582\/163 Compression Ratio: 9.4:1 w\/100cc Combustion Chamber Heads.\u003c\/p\u003e","brand":"United Engine \u0026 Machine Co","offers":[{"title":"Default Title","offer_id":51748963877146,"sku":"SLVKB422.040","price":83.68,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0975\/8942\/8506\/files\/71cPE8fGwtL.jpg?v=1772042101","url":"https:\/\/trybeepbeep.com\/products\/kb422-040-united-engine-machine-pontiac-400ci-hypereutectic-pistons-solid-dome-1","provider":"TryBeepbeep","version":"1.0","type":"link"}