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Fluidampr 620111 Big Block Chevy Harmonic Balancer Internal Balance SFI - 18.1

(Chevrolet Camaro 1967-72, 2014-15, Corvette 1965-69, 2006-07, 2009-10, 2012, Impala 1963, 1965-72, Malibu 1966-67, Chevelle 1965-72 + 23 more models)

Part of: Fluidampr Big Block Chevy Harmonic Balancer Internal Balance SFI

Other options in this family: Fluidampr 800101 Fluidampr 720121

Manufacturer

Picture for manufacturer Fluidampr

Part Number

620111
4 reviews
Sale Price

$438.70

1 left at this price

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Usually delivered within 2 days

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Product Details

The Fluidampr 620111 performance harmonic balancer is engineered to protect Big Block Chevy engines from destructive torsional vibration. Designed for internally balanced applications, this viscous damper delivers superior vibration control across the entire RPM range—far exceeding the capabilities of stock elastomer-style balancers that deteriorate over time and lose effectiveness at high RPM.

Key Features:

  • Viscous fluid damping technology continuously controls torsional vibration at all engine speeds
  • Precision CNC-machined from high-grade steel for exceptional durability and balance
  • Internal balance configuration for Big Block Chevy applications
  • Corrosion-resistant black zinc finish with laser-engraved timing marks
  • SFI 18.1 certified for competition use
  • Maintenance-free operation—no rebuilding or servicing required
  • Made in USA with OEM-quality manufacturing standards

Performance Benefits:

  • Reduces harmful vibration that causes premature wear on bearings, timing chains, and accessories
  • Minimizes risk of crankshaft failure in high-performance and racing applications
  • Improves ignition timing accuracy for more consistent performance
  • Unlocks hidden horsepower and torque by reducing parasitic vibration losses
  • Essential for modified engines with aftermarket camshafts, increased compression, or forced induction

Unlike conventional rubber-element dampers that harden and crack over time, Fluidampr's viscous technology maintains consistent performance throughout the life of your engine. The sealed fluid chamber uses shear forces to dissipate vibration energy as heat, providing superior protection whether you're at idle or redline. Trusted by professional engine builders and racers worldwide, Fluidampr harmonic balancers are the gold standard for serious performance applications.

Products specifications

Fits

Chevrolet Camaro 1967-72, 2014-15, Corvette 1965-69, 2006-07, 2009-10, 2012, Impala 1963, 1965-72, Malibu 1966-67, Chevelle 1965-72, C10 Pickup 1968-72, Caprice 1966-72, C10 1968-72, El Camino 1966-72, Nova 1970, K10 Pickup 1968-69 + 17 more models

Balance Style

Neutral

Bore Dia. Min/Max

1.599 / 1.600

Degree Marking Range

50 BTDC to 10 ATDC

Harmonic Balancer Construction

Fluid

Harmonic Balancer Finish

Black zinc chromate

Harmonic Balancer Material

Aluminum/Steel

Keyway

Single (3/16")

Length

2.685

Mounting Hardware Incl.

No

Notes

Additional timing/degree marks at 90, 180, and 270 degrees.

OD

6-1/4" (6.25)

Outside Diameter (in)

6.250 in.

Quantity

Sold individually.

Rotating Weight

9.0 (6.0 Rwt)

Outside Diameter

6-1/4"

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Weight / Rotating Weight

8.9 lbs / 5.9 lbs

inside Diameter

1.599

Depth

2.685

Keyway Type

Single; (3/16")

Bolt And Washer Included

No

Degree Markings

Engraved

Degree Marking Range

50 BTDC to 10 ATDC. Additional timing/degree marks at 90, 180 and 270

Engine Balance

Internal

Safety Rating

SFI 18.1

Material

Steel

Mounting Hole Quantity

1

Finish

Black Zinc

Fast service and shipping, Plus the lowest price for the high performance k&n air filter<br>I wanted.

So far good.. now wait to arrive to see the quality products. .

I was hesitant to order from Autoplicity due to the perception that the price was too good to be real (and not some scam). However, I read a few reviews on the internet and decided to take a chance. Once I placed my order I was sent a tracking number and received my car parts within 2 weeks. I was happy that I got the parts I ordered and the price was really low. Simple and quick.

Low Prices!! FAST SHIPPING! The best company in the world!

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