ATI PERFORMANCE SUPER DAMPER Harmonic Damper [ALUMINUM SHELL | 7.074" OD | 2 RING | TOTAL WEIGHT 5 LBS | INERTIA WEIGHT 3.4 LBS] (GM LS1)

LS1 SB V8 1.483" CRANK
COUNTERBORED TO ACCEPT DRIVE MANDREL

[4] Hubs for these assemblies have a 2.280 counterbore. A standard length crank bolt is used and the mandrel bolts to the 3 pulley mounting holes. This eliminates the 4" - 6" long bolt that is ineffective in retaining torque. Adapter part # 916321 is available for existing mandrels with 1.245" pilot.
[16] 7" Dampers will not fit front distributor drive timing covers
[17] Aluminum Hub (part #916099) available. Add $25 at time of order.