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8" 454/502 Big Block Chevy SFI Harmonic Damper (Ext.)

Part # 90005


Quick Overview

These dampers are the identical dampers to the 80004/90004 but are fitted with a bolt-in counterweight to provide the proper imbalance for the 454/502 externally balanced engines. Remove the counterweight and it can be used on any natural balance (internal) big block Chevy engine.


Chevy Big Block 454/502 8" SFI Harmonic

These dampers are dimensionally the same as the O.E. 454 damper with an 8" O.D. and a 1.732 inertia ring thickness. The dampers feature 60.

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