Fluidampr Fluidampr Harmonic Balancer CHEVROLET CORVETTE


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Part #: 740121
Notes: Fluidampr Harmonic Balancer
MSRP: $475.56
Your Price: $357.47
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Specs

Bore Dia. Min/Max 1.4818 / 1.4828
Degree Markings No
Engine Balance Internal
Finish Black Zinc
Keyway None
Length 2.838
Material Steel
Mounting Hardware Incl. No
O.D. 7-1/2" (7.500)
Safety Rating SFI 18.1
WT. in lbs.()=Rotating weight 10.9 (7.3 Rwt)

This Item Also Available In

Part Number Price Notes & Specs
620131 $276.70 Notes Fluidampr Harmonic Balancer
Bore Dia. Min/Max 1.4818 / 1.4828
Degree Markings No
Engine Balance Internal
Finish Black Zinc
Keyway None
Length 2.252
Material Steel
Mounting Hardware Incl. No
O.D. 6-1/4" (6.25)
Safety Rating SFI 18.1
WT. in lbs.()=Rotating weight 8.1 (5.4 Rwt)

All Fitments

CADILLAC
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2004 - 2005 CTS V V8 5.7 N ALL ALL
2006 - 2007 CTS V V8 6.0 N ALL ALL
CHEVROLET
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1997 - 2004 CORVETTE BASE V8 5.7 N ALL GAS
2001 - 2004 CORVETTE Z06 V8 5.7 N ALL GAS
PONTIAC
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2008 - 2009 G8 GT V8 6.0 N ALL ALL

Product Description

Fluidampr Engine Dampers are designed to control destructive vibrations which are transfered thru the crankshaft.

Each time the air/fuel mixture inside a cylinder is ignited, the combustion that occurs creates a torque spike that is applied to the crankshaft through the piston and rod. This torque spike is so severe that it not only turns the crankshaft, it actually twists the crankshaft ahead of its normal rotation and then the crankshaft rebounds. This twisting action is known as torsional vibration. When these torque spikes and forces get into phase with the natural frequency, critical torsional harmonic vibrations occur and can be seriously destructive to the bearings and the crankshaft. Dampers are designed to control those destructive vibrations.

Critical harmonic vibrations occur numerous times in a engine’s operating range. Stock rubber and elastomer-type dampers are frequency sensitive “tuned absorbers”, and work at only one critical frequency. In the case of a stock rubber damper, it is tuned for a factory engine’s critical harmonic vibrations. If you change the mass of pistons, rods, or the crankshaft, you change the natural frequency of the crankshaft assembly; therefore, the stock damper is no longer tuned to the new frequency of vibration, and you may be headed for early failure of expensive engine components. Dampers also create heat while they work, and rubber is a poor dissipator of heat. This heat and the exposure to the elements deteriorates rubber, causing it to crack and change durometer, which then leads to inertia ring slippage, damper failure, uncontrolled torsional vibration, and costly engine parts breakage.

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