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90022 - 6.5" 350/400/403/425/455 Olds V8 SFI Harmonic Damper

90022 - 6.5" 350/400/403/425/455 Olds V8 SFI Harmonic Damper

Regular price $202.40 USD
Regular price Sale price $202.40 USD
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6.5" 350/400/403/425/455 Old's V8 SFI Harmonic Damper. 
This is an externally balanced damper with a bolt-in counterweight which can be removed for a neutral balanced rotating assembly. This damper will work on 330/350/400/403/425/455 cubic inch Old's engines. The damper features the stock Old's accessory pulley bolt pattern as well as a Big Block Chevy bolt pattern for those who may want to run a crank trigger system. Use of Chevy pulleys will require some machining to damper. Note: On 330 engines, TDC mark must be repositioned. This damper fits late 400 and 425 only. Early 400/425 engines have a different counterbalance than provided. A good balance shop can modify counterbalance to work correctly on early 400 or 425 engines.
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