Fluidampr Fluidampr Harmonic Balancer CHEVROLET CHEVELLE


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Part #: 620111
Notes: Fluidampr Harmonic Balancer
MSRP: $416.52
Your Price: $316.41
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Specs

Bore Dia. Min/Max 1.599 / 1.600
Degree Marking Range 50 BTDC to 10 ATDC. Additional timing/degree marks at 90, 180 and 270
Degree Markings Yes
Engine Balance Internal
Finish Black Zinc
Keyway Single
Length 2.685
Material Steel
Mounting Hardware Incl. No
O.D. 6-1/4" (6.25)
Safety Rating SFI 18.1
WT. in lbs.()=Rotating weight 9.0 (6.0 Rwt)

This Item Also Available In

Part Number Price Notes & Specs
720121 $361.43 Notes Fluidampr Harmonic Balancer
Bore Dia. Min/Max 1.599 / 1.600
Degree Marking Range 50 BTDC to 10 ATDC. Additional timing/degree marks at 90, 180 and 270
Degree Markings Yes
Engine Balance Internal
Finish Black Zinc
Keyway Single 3/16"
Length 2.685
Material Steel
Mounting Hardware Incl. No
O.D. 7-1/4" (7.250)
Safety Rating SFI 18.1
WT. in lbs.()=Rotating weight 12.7 (8.5 Rwt)
800101 $337.54 Notes Fluidampr Harmonic Balancer
Bore Dia. Min/Max 1.599 / 1.600
Degree Marking Range 50 BTDC to 10 ATDC. Additional timing/degree marks at 90, 180 and 270
Degree Markings Yes
Engine Balance Internal
Finish Black Zinc
Keyway Single
Length 2.75
Material Steel
Mounting Hardware Incl. No
O.D. 8" (8.000)
Safety Rating SFI 18.1
WT. in lbs.()=Rotating weight 15.5 (10.3 Rwt)
800131 $413.07 Notes Fluidampr Harmonic Balancer
Bore Dia. Min/Max 1.599 / 1.600
Degree Marking Range 50 BTDC to 10 ATDC. Additional timing/degree marks at 90, 180 and 270
Degree Markings Yes
Engine Balance Internal
Finish Black Zinc
Keyway Dual
Length 2.75
Material Steel
Mounting Hardware Incl. No
O.D. 8" (8.000)
Safety Rating SFI 18.1
WT. in lbs.()=Rotating weight 15.5 (10.3 Rwt)
800151 $449.76 Notes Fluidampr Harmonic Balancer
Bore Dia. Min/Max 1.599 / 1.600
Degree Marking Range 50 BTDC to 10 ATDC. Additional timing/degree marks at 90, 180 and 270
Degree Markings Yes
Engine Balance Internal
Finish Black Zinc
Keyway Dual
Length 2.75
Material Steel
Mounting Hardware Incl. No
O.D. 8" (8.000)
Safety Rating SFI 18.1
WT. in lbs.()=Rotating weight 15.5 (10.3 Rwt)
80250E $404.71 Notes CT Gold Harmonic Balancer
Bore Dia. Min/Max 1.599 / 1.600
Degree Marking Range 50 degree BTDC to 10 degree ATDC, Additional marks at 90, 180 & 2
Degree Markings Yes
Engine Balance Internal
Finish Gold Zinc
Hub Finish Black Zinc
Keyway Single (3/16")
Length 2.75
Material Steel
Mounting Hardware Incl. No
OD 8" (8.000)
Rotating Weight 15.5 (10.3 Rwt)
Safety Rating SFI 18.1
80255E $452.63 Notes CT Gold Harmonic Balancer
Bore Dia. Min/Max 1.599 / 1.600
Degree Marking Range 50 degree BTDC to 10 degree ATDC, Additional marks at 90, 180 & 2
Degree Markings Yes
Engine Balance Internal
Finish Gold Zinc
Hub Finish Black Zinc
Keyway Dual (3/16", 3/16")
Length 2.75
Material Steel
Mounting Hardware Incl. No
OD 8" (8.000)
Rotating Weight 15.5 (10.3 Rwt)
Safety Rating SFI 18.1
80256E $475.27 Notes CT Gold Harmonic Balancer
Bore Dia. Min/Max 1.599 / 1.600
Degree Marking Range 50 degree BTDC to 10 degree ATDC, Additional marks at 90, 180 & 2
Degree Markings Yes
Engine Balance Internal
Finish Gold Zinc
Hub Finish Black Zinc
Keyway Dual (1/4", 1/4")
Length 2.75
Material Steel
Mounting Hardware Incl. No
OD 8" (8.000)
Rotating Weight 15.5 (10.3 Rwt)
Safety Rating SFI 18.1
80257E $447.03 Notes CT Gold Harmonic Balancer
Bore Dia. Min/Max 1.599 / 1.600
Degree Marking Range 50 degree BTDC to 10 degree ATDC, Additional marks at 90, 180 & 2
Degree Markings Yes
Engine Balance Internal
Finish Gold Zinc
Hub Finish Black Zinc
Keyway Dual (1/4", 3/16")
Length 2.75
Material Steel
Mounting Hardware Incl. No
OD 8" (8.000)
Rotating Weight 15.5 (10.3 Rwt)
Safety Rating SFI 18.1

All Fitments

CHEVROLET
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1966 - 1969 BEL AIR ALL V8 6.5 N ALL ALL
1966 - 1969 BEL AIR ALL V8 7.0 N ALL ALL
1966 - 1969 BEL AIR BASE V8 7.0 N ALL GAS
1971 - 1972 BEL AIR ALL V8 6.6 N ALL ALL
1966 - 1969 BISCAYNE ALL V8 6.5 N ALL ALL
1966 - 1969 BISCAYNE ALL V8 7.0 N ALL ALL
1966 - 1969 BISCAYNE BASE V8 7.0 N ALL GAS
1971 - 1972 BISCAYNE ALL V8 6.6 N ALL ALL
1969 - 1969 BROOKWOOD BASE V8 7.0 N ALL GAS
1967 - 1970 CAMARO ALL V8 6.5 N ALL ALL
1969 - 1969 CAMARO BASE V8 7.0 N ALL GAS
1970 - 1972 CAMARO ALL V8 6.6 N ALL ALL
1966 - 1969 CAPRICE ALL V8 6.5 N ALL ALL
1966 - 1969 CAPRICE ALL V8 7.0 N ALL ALL
1966 - 1969 CAPRICE BASE V8 7.0 N ALL GAS
1971 - 1972 CAPRICE ALL V8 6.6 N ALL ALL
1966 - 1968 CHEVELLE SS V8 6.5 N ALL ALL
1967 - 1969 CHEVELLE ALL V8 6.5 N ALL ALL
1968 - 1968 CHEVELLE 300 V8 6.5 N ALL ALL
1968 - 1969 CHEVELLE NOMAD V8 6.5 N ALL ALL
1969 - 1969 CHEVELLE 300 DELUXE V8 6.5 N ALL ALL
1969 - 1969 CHEVELLE CONCOURS V8 6.5 N ALL ALL
1969 - 1969 CHEVELLE CONCOURS ESTATE V8 6.5 N ALL ALL
1969 - 1969 CHEVELLE GREENBRIER V8 6.5 N ALL ALL
1970 - 1972 CHEVELLE ALL V8 6.6 N ALL ALL
1970 - 1972 CHEVELLE CONCOURS ESTATE V8 6.6 N ALL ALL
1970 - 1972 CHEVELLE GREENBRIER V8 6.6 N ALL ALL
1970 - 1972 CHEVELLE NOMAD V8 6.6 N ALL ALL
1972 - 1972 CHEVELLE CONCOURS V8 6.6 N ALL ALL
1966 - 1969 CORVETTE ALL V8 7.0 N ALL ALL
1966 - 1969 CORVETTE BASE V8 7.0 N ALL GAS
1966 - 1970 EL CAMINO ALL V8 6.5 N ALL ALL
1969 - 1969 EL CAMINO CUSTOM V8 6.5 N ALL ALL
1970 - 1972 EL CAMINO ALL V8 6.6 N ALL ALL
1971 - 1972 EL CAMINO CUSTOM V8 6.6 N ALL ALL
1969 - 1969 ESTATE BASE V8 7.0 N ALL GAS
1966 - 1969 IMPALA ALL V8 6.5 N ALL ALL
1966 - 1969 IMPALA ALL V8 7.0 N ALL ALL
1966 - 1969 IMPALA BASE V8 7.0 N ALL GAS
1971 - 1972 IMPALA ALL V8 6.6 N ALL ALL
1969 - 1969 KINGSWOOD BASE V8 7.0 N ALL GAS
1969 - 1969 TOWNSMAN BASE V8 7.0 N ALL GAS

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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