Chev 396 402 427 Not 454 TCI Timing Pointer # TCI871005Chev 396 402 427 Not 454 TCI Timing Pointer # TCI871005 Timing Pointer, Billet Aluminum, Black Anodized, Adjustable, 7. 25 in. Damper, Chevy, Big Block, Each Adjustable: Yes Harmonic Balancer Diameter (in): 7. 250 in. Pointer Material: Billet aluminum Pointer Finish: Black anodized Hardware Included: Yes These TCI timing pointers are designed to work with the Rattler harmonic dampers. The high quality timing pointers are CNC machined from billet