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Chevy Performance - PROFORM HARMONIC BALANCER / DAMPER COVERS | ![]() |
Proform harmonic balancer (also called damper) covers come in 6-3/4” and 8” sizes as well as with and without
a Chevy logo. They bolt to the inner hub, offer easy readability, eliminate flung off tape, and have looks like a $200.00 balancer. Note: More parts will be added as time permits. If you don’t see the Proform part you are looking for, give us a call and if we don’t have it in stock, we will try to get it for you. We have much more Proform parts in stock then we have time to put on our web site. |
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WEB SITE NAVIGATION INFORMATION | ![]() |
If you have you just came from a search engine and are stuck with no navigation, turn on Java Scripts in your Web browser, reload the page, then you can turn off Java Scripts again. Also, people using Internet Explorer have to use the pull down tab next to the back button to return to a search engine. More information on this is on our help page. |
GM and Chevy Performance part prices are in the Price & Parts search. Keys are to be used with the Price & Parts Search. Enter a Key, part number, GM, SC, or a key word, like 502, into the Price & Parts search to see if we have it on our site. Use GM for a list of both GM and GMPP parts. Use SC for a list of all Chevy Performance exclusive parts. Aftermarket company prices are on downloadable Price Sheets or on their pages. The Page Search is for searching the pages of our Web site. More information on this is on our help page. |
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PROFORM WEB SITE LINKS AND SEARCH HELP | ![]() |
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PROFORM NAVIGATION | ![]() |
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PROFORM GM SBC HARMONIC BALANCER / DAMPER COVERS 6-3/4” | ![]() |
Part Number | Description | Picture |
66517BC |
SBC Blue Anodized 6-3/4”
Harmonic balancer covers win runner-up award for Best New Street Performance Product.
Slippage of the etched outer ring of a harmonic balancer, in relation to the inner-mounting hub, is a common
occurrence. This cover fixes the problem because it bolts through the inner hub, offers easy readability, eliminates
flung-off timing tape, and looks like a $200.00 balancer. Each cover is
distinctively marked with Top Dead Center and the proper timing degrees. Note: For engines equipped with timing tab
welded in the middle of timing chain cover, you must use a bolt-on aftermarket timing tab (Typically 1984 and
later.). |
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66517BKC |
SBC Black Anodized 6-3/4”
Harmonic balancer covers win runner-up award for Best New Street Performance Product.
Slippage of the etched outer ring of a harmonic balancer, in relation to the inner-mounting hub, is a common
occurrence. This cover fixes the problem because it bolts through the inner hub, offers easy readability, eliminates
flung-off timing tape, and looks like a $200.00 balancer. Each cover
is distinctively marked with Top Dead Center and the proper timing degrees. Note: For engines equipped with timing tab
welded in the middle of timing chain cover, you must use a bolt-on aftermarket timing tab (Typically 1984 and
later.). |
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66517BLTC |
SBC Brushed Aluminum (Billet Look) 6-3/4”
Harmonic balancer covers win runner-up award for Best New Street Performance Product.
Slippage of the etched outer ring of a harmonic balancer, in relation to the inner-mounting hub, is a common
occurrence. This cover fixes the problem because it bolts through the inner hub, offers easy readability, eliminates
flung-off timing tape, and looks like a $200.00 balancer. Each cover
is distinctively marked with Top Dead Center and the proper timing degrees. Note: For engines equipped with timing tab
welded in the middle of timing chain cover, you must use a bolt-on aftermarket timing tab (Typically 1984 and
later.). |
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66517CC |
SBC Chrome 6-3/4”
Harmonic balancer covers win runner-up award for Best New Street Performance Product.
Slippage of the etched outer ring of a harmonic balancer, in relation to the inner-mounting hub, is a common
occurrence. This cover fixes the problem because it bolts through the inner hub, offers easy readability, eliminates
flung-off timing tape, and looks like a $200.00 balancer. Each cover
is distinctively marked with Top Dead Center and the proper timing degrees. Note: For engines equipped with timing tab
welded in the middle of timing chain cover, you must use a bolt-on aftermarket timing tab (Typically 1984 and
later.). |
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Note: Chevy Performance does not recommend that you get the chromed covers. We have determined that it is near impossible to time an engine with this version and a timing light. We do not stock these so they would have to be special ordered or you will have to wait until our next stock replacement order. |
66517RC |
SBC Red Anodized, 6-3/4”
Harmonic balancer covers win runner-up award for Best New Street Performance Product.
Slippage of the etched outer ring of a harmonic balancer, in relation to the inner-mounting hub, is a common
occurrence. This cover fixes the problem because it bolts through the inner hub, offers easy readability, eliminates
flung-off timing tape, and looks like a $200.00 balancer. Each cover
is distinctively marked with Top Dead Center and the proper timing degrees. Note: For engines equipped with timing tab
welded in the middle of timing chain cover, you must use a bolt-on aftermarket timing tab (Typically 1984 and
later.). |
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141-727 |
SBC Black Anodized 6-3/4” Chevy Logo
These patented harmonic balancer covers offer improved readability, more stable
Top Dead Center indication and timing accuracy, enhanced appearance for a previously ignored under hood area, and the
elimination of timing tapes. Distinctively marked with the famous Bow Tie logo, Top Dead Center and the proper timing
degrees. Using this cover improves timing accuracy because over time the etched outer inertia ring of a typical
harmonic balancer may slip in relation to the center hub of the balancer, causing the etched markings to provide an
inaccurate indication of Top Dead Center for the #1 piston. Mounted directly through the center hub, this cover
eliminates the affect of any outer inertia ring slippage. Aluminum. U.S. Patent 5,6785,078. |
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141-725 |
SBC Chrome 6-3/4” Chevy Logo
These patented harmonic balancer covers offer improved readability, more stable
Top Dead Center indication and timing accuracy, enhanced appearance for a previously ignored under hood area, and the
elimination of timing tapes. Distinctively marked with the famous Bow Tie logo, Top Dead Center and the proper timing
degrees. Using this cover improves timing accuracy because over time the etched outer inertia ring of a typical
harmonic balancer may slip in relation to the center hub of the balancer, causing the etched markings to provide an
inaccurate indication of Top Dead Center for the #1 piston. Mounted directly through the center hub, this cover
eliminates the affect of any outer inertia ring slippage. Aluminum. U.S. Patent 5,6785,078. |
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Note: Chevy Performance does not recommend that you get the chromed covers. We have determined that it is near impossible to time an engine with this version and a timing light. We do not stock these so they would have to be special ordered or you will have to wait until our next stock replacement order. |
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PROFORM GM SBC HARMONIC BALANCER / DAMPER COVERS 8” | ![]() |
Part Number | Description | Picture |
66518BC |
SBC Blue Anodized 8”
Harmonic balancer covers win runner-up award for Best New Street Performance Product.
Slippage of the etched outer ring of a harmonic balancer, in relation to the inner-mounting hub, is a common
occurrence. This cover fixes the problem because it bolts through the inner hub, offers easy readability, eliminates
flung-off timing tape, and looks like a $200.00 balancer. Each cover is
distinctively marked with Top Dead Center and the proper timing degrees. Note: For engines equipped with timing tab
welded in the middle of timing chain cover, you must use a bolt-on aftermarket timing tab (Typically 1984 and
later.). |
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66518BKC |
SBC Black Anodized 8”
Harmonic balancer covers win runner-up award for Best New Street Performance Product.
Slippage of the etched outer ring of a harmonic balancer, in relation to the inner-mounting hub, is a common
occurrence. This cover fixes the problem because it bolts through the inner hub, offers easy readability, eliminates
flung-off timing tape, and looks like a $200.00 balancer. Each cover is
distinctively marked with Top Dead Center and the proper timing degrees. Note: For engines equipped with timing tab
welded in the middle of timing chain cover, you must use a bolt-on aftermarket timing tab (Typically 1984 and
later.). |
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66518BLTC |
SBC Brushed Aluminum (Billet Look) 8”
Harmonic balancer covers win runner-up award for Best New Street Performance Product.
Slippage of the etched outer ring of a harmonic balancer, in relation to the inner-mounting hub, is a common
occurrence. This cover fixes the problem because it bolts through the inner hub, offers easy readability, eliminates
flung-off timing tape, and looks like a $200.00 balancer. Each cover is
distinctively marked with Top Dead Center and the proper timing degrees. Note: For engines equipped with timing tab
welded in the middle of timing chain cover, you must use a bolt-on aftermarket timing tab (Typically 1984 and
later.). |
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66518CC |
SBC Chrome 8”
Harmonic balancer covers win runner-up award for Best New Street Performance Product.
Slippage of the etched outer ring of a harmonic balancer, in relation to the inner-mounting hub, is a common
occurrence. This cover fixes the problem because it bolts through the inner hub, offers easy readability, eliminates
flung-off timing tape, and looks like a $200.00 balancer. Each cover is
distinctively marked with Top Dead Center and the proper timing degrees. Note: For engines equipped with timing tab
welded in the middle of timing chain cover, you must use a bolt-on aftermarket timing tab (Typically 1984 and
later.). |
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Note: Chevy Performance does not recommend that you get the chromed covers. We have determined that it is near impossible to time an engine with this version and a timing light. We do not stock these so they would have to be special ordered or you will have to wait until our next stock replacement order. |
66518RC |
SBC Red Anodized 8”
Harmonic balancer covers win runner-up award for Best New Street Performance Product.
Slippage of the etched outer ring of a harmonic balancer, in relation to the inner-mounting hub, is a common
occurrence. This cover fixes the problem because it bolts through the inner hub, offers easy readability, eliminates
flung-off timing tape, and looks like a $200.00 balancer. Each cover is
distinctively marked with Top Dead Center and the proper timing degrees. Note: For engines equipped with timing tab
welded in the middle of timing chain cover, you must use a bolt-on aftermarket timing tab (Typically 1984 and
later.). |
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141-728 |
SBC Black Anodized 8” Chevy Logo
These patented harmonic balancer covers offer improved readability, more stable
Top Dead Center indication and timing accuracy, enhanced appearance for a previously ignored under hood area, and the
elimination of timing tapes. Distinctively marked with the famous Bow Tie logo, Top Dead Center and the proper timing
degrees. Using this cover improves timing accuracy because over time the etched outer inertia ring of a typical
harmonic balancer may slip in relation to the center hub of the balancer, causing the etched markings to provide an
inaccurate indication of Top Dead Center for the #1 piston. Mounted directly through the center hub, this cover
eliminates the affect of any outer inertia ring slippage. Aluminum. U.S. Patent 5,6785,078. |
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141-726 |
SBC Chrome 8” Chevy Logo
These patented harmonic balancer covers offer improved readability, more stable
Top Dead Center indication and timing accuracy, enhanced appearance for a previously ignored under hood area, and the
elimination of timing tapes. Distinctively marked with the famous Bow Tie logo, Top Dead Center and the proper timing
degrees. Using this cover improves timing accuracy because over time the etched outer inertia ring of a typical
harmonic balancer may slip in relation to the center hub of the balancer, causing the etched markings to provide an
inaccurate indication of Top Dead Center for the #1 piston. Mounted directly through the center hub, this cover
eliminates the affect of any outer inertia ring slippage. Aluminum. U.S. Patent 5,6785,078. |
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Note: Chevy Performance does not recommend that you get the chromed covers. We have determined that it is near impossible to time an engine with this version and a timing light. We do not stock these so they would have to be special ordered or you will have to wait until our next stock replacement order. |
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PROFORM GM BBC HARMONIC BALANCER / DAMPER COVERS 8” | ![]() |
Part Number | Description | Picture |
141-730 |
BBC Black Anodized 8” Chevy Logo
These patented harmonic balancer covers offer improved readability, more stable
Top Dead Center indication and timing accuracy, enhanced appearance for a previously ignored under hood area, and the
elimination of timing tapes. Distinctively marked with the famous Bow Tie logo, Top Dead Center and the proper timing
degrees. Using this cover improves timing accuracy because over time the etched outer inertia ring of a typical
harmonic balancer may slip in relation to the center hub of the balancer, causing the etched markings to provide an
inaccurate indication of Top Dead Center for the #1 piston. Mounted directly through the center hub, this cover
eliminates the affect of any outer inertia ring slippage. Aluminum. U.S. Patent 5,6785,078. |
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141-729 |
BBC Chrome 8” Chevy Logo
These patented harmonic balancer covers offer improved readability, more stable
Top Dead Center indication and timing accuracy, enhanced appearance for a previously ignored under hood area, and the
elimination of timing tapes. Distinctively marked with the famous Bow Tie logo, Top Dead Center and the proper timing
degrees. Using this cover improves timing accuracy because over time the etched outer inertia ring of a typical
harmonic balancer may slip in relation to the center hub of the balancer, causing the etched markings to provide an
inaccurate indication of Top Dead Center for the #1 piston. Mounted directly through the center hub, this cover
eliminates the affect of any outer inertia ring slippage. Aluminum. U.S. Patent 5,6785,078. |
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Note: Chevy Performance does not recommend that you get the chromed covers. We have determined that it is near impossible to time an engine with this version and a timing light. We do not stock these so they would have to be special ordered or you will have to wait until our next stock replacement order. |
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