Fluidampr 620101 Harmonic Damper Chevy Small Block
Fluidampr 620101 Harmonic Damper Chevy Small Block
Fluidampr 620101 Harmonic Damper Chevy Small Block
Fluidampr 620101 Harmonic Damper Chevy Small Block
Fluidampr 620101 Harmonic Damper Chevy Small Block
Fluidampr 620101 Harmonic Damper Chevy Small Block
Fluidampr 620101 Harmonic Damper Chevy Small Block
Fluidampr 620101 Harmonic Damper Chevy Small Block
BRAND: Fluidampr | SKU: Fluidampr-620101

Fluidampr 620101 - Small Block Chevy Harmonic Balancer

$378.25 $445.00 $445.00 /
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AMERICAN MADE

Upgrade your Chevy small block engine with the Fluidampr 620101 harmonic balancer. Engineered for V6 & V8 models (1955-1995), it reduces vibrations, boosts horsepower, and extends engine life. Direct bolt-on, maintenance-free, made in the USA.
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Premium Harmonic Balancer for Chevy Small Block V8 & V6 Engines

The Fluidampr 620101 is a high-performance viscous harmonic balancer designed for Chevy small block engines from 1955 to 1995. Engine modifications and high-rev applications can create destructive torsional vibrations, leading to crankshaft wear, reduced efficiency, and potential engine failure. The Fluidampr 620101 harmonic balancer eliminates these risks by self-tuning in real-time, providing smooth performance, increased power, and enhanced engine longevity.

Key Features & Benefits

  • Eliminates Harmful Torsional Vibrations – Protects the crankshaft and critical engine components.
  • Increases Horsepower & Torque – Reduces power loss caused by inefficient vibration control.
  • Self-Tuning Viscous Technology – Continuously adjusts in real-time to control engine vibrations.
  • Improves Fuel Efficiency – Ensures smoother power delivery, reducing parasitic losses.
  • Built for Performance Applications – Perfect for stock or modified Chevy small block engines.
  • Precision CNC-Machined & Balanced – Ensures optimal timing accuracy and engine stability.
  • Direct Bolt-On Installation – No tuning required, simple plug-and-play upgrade.

Compatible Chevy Small Block Engines

The Fluidampr 620101 harmonic balancer is engineered for Chevy V6 and V8 small block engines, including:

  • Chevy 4.3L 262 V6
  • Chevy 4.6L 283 V8
  • Chevy 5.0L 305 V8
  • Chevy 5.0L 307 V8
  • Chevy 5.4L 327 V8
  • Chevy 5.7L 350 V8
  • Chevy 6.7L 409 V8

Not compatible with LT1 engines produced after 1992.

Technical Specifications

  • Material: Steel Construction
  • Coating: Black Zinc Finish (Corrosion Resistant)
  • Outside Diameter: 6.25"
  • Weight: 7.9 lbs
  • Length: 2.335"
  • Construction: One-Piece CNC Machined
  • Keyway: Single 3/16"
  • Bore Diameter: 1.2450"
  • Exterior Timing Marks: 90°, 180°, and 270°
  • Made in the USA 🇺🇸

Why Upgrade to the Fluidampr 620101?

Your OEM rubber harmonic balancer degrades over time, leading to poor vibration control and crankshaft stress. The Fluidampr 620101 offers long-lasting durability and precise vibration dampening, making it the best choice for high-performance and daily-driven Chevy small block engines.

Recommended Complementary Upgrades

 

  • By KLM Performance
  • Engine : 262 | 350 | 409
  • Item Number: Fluidampr 620101
  • Make : Chevy | GM | Pontiac | Buick
  • Model: N/A
  • Year : 1955 | 1956 | 1957 | 1958 | 1959 | 1960 | 1961 | 1962 | 1963 | 1964 | 1965 | 1966 | 1967 | 1968 | 1969 | 1970 | 1971 | 1972 | 1973 | 1974 | 1975 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 
  • Manufacturer Part No: 620101
  • Product Application: 1955 to 1995 GM Small Block Motors 262, 350, 409, V-8, 60 Degree V-6
  • Height: 6
  • Width: 15
  • Brand: Fluidampr
  • FAQ :
  • Part Number : 620101
  • Manufacturer : Fluidampr
  • Product Note: Utilizing the Fluidampr 620101 Harmonic Damper ensures necessary engine protection and avoids potential risks that may arise from modifications to the stock harmonic balancer. Installing this performance damper early on maximizes durability and minimizes harmful torsional vibrations at all rpm ranges, reducing wear on engine components and the likelihood of crankshaft failure. It also improves timing, unleashing lost torque and horsepower. Crafted from high-grade steel with a corrosion-resistant black zinc finish and engraved timing marks, this precision CNC machined and balanced damper requires no maintenance and is trusted by top engine builders worldwide.
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