{"product_id":"steel-lifters-tappets","title":"Steel Lifters\/Tappets","description":"\u003ch4\u003e1.45\" DLC-Coated Steel Tappets\u003c\/h4\u003e\u003cp\u003eHamilton Cams steel tappets built for engines running 110 lb or heavier valve springs at sustained high rpm. The 1.45\" face is gas carburized, polished and finished with a Diamond-Like Carbon coating that cuts friction and resists the scuffing that ends a flat-tappet valvetrain early.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDLC coating\u003c\/strong\u003e — an ultra-hard, low-friction surface that holds up where uncoated steel galls\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.45\" face\u003c\/strong\u003e — more contact area with the lobe, better lobe life on today’s low-zinc diesel oils\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel construction\u003c\/strong\u003e — stable under 110 lb and heavier seat pressures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsistent lift\u003c\/strong\u003e — less deflection, so cam timing stays where it was set\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eRequired Setup\u003c\/h4\u003e\u003cp\u003eThese tappets must be run with a \u003cstrong\u003esteel camshaft\u003c\/strong\u003e. Pairing steel tappets with a cast cam, or the reverse, wears both parts out quickly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSteel camshaft required\u003c\/li\u003e\n\u003cli\u003eDiesel oil with adequate zinc, phosphorus and molybdenum — thin, low-additive oils do not build the film a flat tappet needs\u003c\/li\u003e\n\u003cli\u003eCorrect valve lash; valve float damages the DLC layer\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFitment\u003c\/h4\u003e\u003cp\u003e1989–2007 Dodge Ram 5.9L Cummins and 2007.5–2018 Ram 6.7L Cummins flat-tappet builds using a compatible steel camshaft.\u003c\/p\u003e","brand":"Hamilton Cams","offers":[{"title":"Default Title","offer_id":48949758820629,"sku":"07-t-002","price":699.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0845\/6844\/1109\/files\/file-7.webp?v=1747429458","url":"https:\/\/shop.davesusa.com\/products\/steel-lifters-tappets","provider":"Dave's Auto Center","version":"1.0","type":"link"}