Hamilton Cams 1989-1998 Dodge/Ram 2500/3500 5.9L Cummins 12V Performance Beehive Valve Springs (155 lb)
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
These 155 lb conical beehive springs include retainers and locks for 12-valve Cummins builds with moderate cams and stock-size valves. Review the installed-height specifications; larger valves, more lift or operation above 4,500 RPM may call for the dual spring kit.
Conical Beehive Valve Springs (155 lbs Seat Pressure) – Retainers & Locks Included
Upgrade 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 4,500 RPM or 65 lbs of boost/drive pressure. This conical design offers enhanced stability for moderate cams and OEM-size valves.
Why Conical Beehive Springs?
- Improved Valvetrain Control: Reduce valve float and reversion, critical issues when boost and RPM levels rise.
- Power-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.
- Higher Seat Pressure (155 lbs @ 1.880″): Ensures valves won’t be forced open by intake or exhaust pressures, safeguarding against damage and power loss.
- Conical Shape for Stability: The latest spring design improves harmonic damping, leading to smoother, more reliable operation at higher RPM.
What’s Included
- Retainers & Locks: Ready to install for most 12-valve Cummins configurations.
- Optional Locks: Increase your installed height by .075″ if needed for specific build requirements.
Installation & Considerations
- RPM Range: Perfect for builds up to 4,500 RPM with mild-to-moderate cam profiles and stock-size valves.
- When to Upgrade: If you exceed 4,500 RPM or .360″ lift aftermarket cams, or use larger valves, consider stepping up to the Dual Spring kit for added safety and control.
- Combat Valve Float & Reversion: Keep harmful exhaust gases out of the intake stroke, preserving combustion quality and maximizing power.
This part fits the following vehicles:
| Years | Make & Model |
|---|---|
| 1989 | Dodge D250 |
| 1989 | Dodge D350 |
| 1998 | Dodge Ram 2500 |
| 1998 | Dodge Ram 3500 |
Fitment is listed by year, make and model. Some applications also depend on cab, bed, drivetrain or engine — if you are not sure, call 636-429-7020 or send us your vehicle details and we will confirm before you order.
