8" Harmonic Balancer / Dampner? (350 SBC) - Need suitable replacement - Hot Rod Forum : Hotrodders Bulletin Board
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Old 07-25-2008, 07:04 AM
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8" Harmonic Balancer / Dampner? (350 SBC) - Need suitable replacement

1976 350 SBC. Stock crank. Engine has a flywheel, no flexplate. Stock Balancer is 8".

1. Is it internally or externally balanced?

2. The stock balancer rubber is cracking badly... since I have the engine apart, I want to replace it with a nice one. It should be able to handle 6500 rpm max. Not looking to spend $300 though. Might be willing to get in the 100-150 range. Can anyone suggest a good USA brand?

Thanks!

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Old 07-25-2008, 07:53 AM
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IIRC, the only small block that was externally balanced was the 400.

You might want to check out a Fluidampr 670100. I think all Fluidampr units are built in the US. This one is not SFI approved, so racing bodies requiring an SFI unit won't accept it. It is 6-7/8" dia., so you will have to change your timing tab. And it will set you back a shade over 2 c-notes.
A Summit SUM-C4265 is SFI 18.1 approved, probably made in China, 6.610", but will only set you back $127.39.
A JEGS #555-51653 is probably made in China, 8" dia., and will only set you back $63.
I think I would go with Fluidampr unit. If I couldn't go $210, I would probably go with the Jegs unit.
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Old 07-25-2008, 08:21 AM
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Im weary of China made products, esp when it comes to my engine components. I will check on the fluidampr part number you listed.

I went to ebay and found these... http://cgi.ebay.com/ebaymotors/Parts...QQcmdZViewItem

Dont know where they are made though.
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Old 07-25-2008, 09:02 AM
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well, I pulled the trigger and ordered it.

PPS9002 SFI Damper 8"

$155 to my door wasnt too bad. Plus, they are mfg in California! We shall see how it turns out...
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Old 07-25-2008, 12:49 PM
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Professional Products is located in Norco, CA. But I think they import their products. Did PP tell you they are manufactured in California?
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Old 07-25-2008, 01:06 PM
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you could have bought a dampner just as good for 100 bucks through summit or Competition products.

Professional Products might be offshore but I haven't had a problem with any of the three that I have installed on different motors. These are race motors turning up to 7500 RPM regularly.
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Old 07-25-2008, 01:41 PM
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I was told they were mfg in Cali from Kentucky Speed. But who knows... Hopefully it will be nice. I tried to get the right stuff.
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Old 07-25-2008, 01:44 PM
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Damper Doctor....8" rebuilt with new elastomeric material, $32.95....
http://www.damperdoctor.com/Merchant...egory_Code=CHE
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Old 07-26-2008, 10:20 PM
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http://www.sdparts.com/catalog/engin...Balancers.aspx

GM's offerings
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Old 07-27-2008, 07:38 PM
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Im happy with my choice of the PPS 9002. Thanks for all the replies!
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