{"product_id":"heavy-duty-valve-springs-for-1989-1998-dodge-ram-5-9l-cummins-12v-hamilton-cams","title":"Heavy Duty Valve Springs for 1989-1998 Dodge Ram 5.9L Cummins 12V - Hamilton Cams","description":"\u003cp\u003eUpgrade your 12-valve Cummins valvetrain with our Conical Beehive Valve Springs, delivering 155 lbs of seat pressure to keep valves firmly under control up to 4,500rpm RPM or 65lbs of boost\/drive pressure. This conical design offers enhanced stability for moderate cams and OEM-size valves, all the way up to 4,500 RPM. Higher Seat Pressure (155 lbs at 1.880 Inch): Ensures valves won't be forced open by intake or exhaust pressures, safeguarding against damage and power loss.\u003c\/p\u003e\n\u003cp\u003eElevate your 12-valve Cummins performance with our Conical Beehive Valve Springs (155 lbs seat pressure) - an essential upgrade for improved reliability, consistent power, and better valvetrain durability under demanding conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures and Benefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eImproved Valvetrain Control: Reduce valve float and reversion, critical issues when boost and RPM levels rise.\u003c\/li\u003e\n\u003cli\u003ePower-Boosting Potential: Customers have reported 10 - 12 HP gains when switching from 60 lb springs to our beehives, thanks to consistent valve seal and reduced reversion.\u003c\/li\u003e\n\u003cli\u003eConical Shape for Stability: The latest spring design improves harmonic damping, leading to smoother, more reliable operation at higher RPM.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRetainers \u0026amp; Locks: Ready to install for most 12-valve Cummins configurations.\u003c\/li\u003e\n\u003cli\u003eOptional Locks: Increase your installed height by .075 Inch if needed for specific build requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDetails:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSold As: Set\u003c\/li\u003e\n\u003cli\u003eUniversal: No\u003c\/li\u003e\n\u003cli\u003eVehicle Type: Truck\u003c\/li\u003e\n\u003cli\u003eLiter: 5.9L\u003c\/li\u003e\n\u003cli\u003eFuel Type: Diesel\u003c\/li\u003e\n\u003cli\u003eValve: 12-Valve\u003c\/li\u003e\n\u003cli\u003eSpring Type: Conical Beehive\u003c\/li\u003e\n\u003cli\u003eRPM Range: Up to 4,500 RPM\u003c\/li\u003e\n\u003cli\u003eSeat Pressure: 155 lb at 1.880 Inch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFitment Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFitment: 1989-1998 Dodge Ram 5.9L Cummins 12-Valve engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRPM Range: Perfect for builds up to 4,500 RPM with mild-to-moderate cam profiles and stock-size valves.\u003c\/li\u003e\n\u003cli\u003eWhen to Upgrade: If you exceed 4,500 RPM or .360 Inch lift aftermarket cams, or use larger valves, consider stepping up to our Dual Spring kit for added safety and control.\u003c\/li\u003e\n\u003cli\u003eCombat Valve Float \u0026amp; Reversion: Keep harmful exhaust gases out of the intake stroke, preserving combustion quality and maximizing power.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hamilton Cams","offers":[{"title":"Default Title","offer_id":67672629182538,"sku":"07-s-001","price":389.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0051\/3146\/8874\/files\/07-s-001-GHJR.jpg?v=1791905151","url":"https:\/\/dieselpartdeals.com\/products\/heavy-duty-valve-springs-for-1989-1998-dodge-ram-5-9l-cummins-12v-hamilton-cams","provider":"Diesel Part Deals","version":"1.0","type":"link"}