Fluidampr Chrysler B/RB 383 426 440 CID 426 Hemi Steel Internally Balanced Damper

If you're building or maintaining a Mopar big block engine, especially one that's seen some performance upgrades, controlling torsional vibration is key to long-term durability. This Fluidampr harmonic balancer is designed specifically for Chrysler B, RB, and 426 Hemi engines, helping to protect your crankshaft from the harmful stresses that can occur across the entire RPM range. It's a well-built piece that can make a notable difference in how your engine runs and how long it lasts.

What sets this damper apart is its viscous design. Unlike stock rubber-bonded balancers that can degrade over time, this unit uses a high-quality steel housing filled with a special viscous fluid. This fluid absorbs and dissipates torsional energy, effectively smoothing out engine pulses before they can cause damage. This translates to reduced wear on critical engine components like bearings and the crankshaft itself, lowering the risk of costly failures. Plus, by reducing vibration, it can help improve ignition timing accuracy, potentially unlocking lost torque and horsepower that your engine was already capable of producing.

This damper is precision CNC machined from high-grade steel and features a corrosion-resistant black zinc finish with engraved timing marks for easy setup. It's SFI 18.1 certified, meaning it meets the safety standards for racing applications, and requires no maintenance over its lifespan. It fits a wide range of Chrysler and Dodge vehicles from the late 50s through the late 70s, including models like the Dodge Charger, Chrysler New Yorker, and Dodge D-series trucks. Note that some older B-series engines might require the stock pulley to be re-drilled for the 6-bolt pattern on this damper.