Assault Racing Products Harmonic Balancer
Small Block Ford V8 - Externally Balanced
289 302 351W Early 1963 - 1980
KMJ Performance is proud to sell the Assault Racing SB Ford Harmonic Balancer! This damper is manufactured to match the dimensions of the stock early (1963-'69) small block Ford dampers. The outside diameter and the thickness are the same. The counterbalance weight matches the stock 28 ounce inches and the overall balance specifications are held tighter than the original O.E. tolerances. The dampers have both the early 3-bolt accessory pulley bolt pattern and the later 4-bolt as well. This will allow the use of late model serpentine drive systems on early engines if desired. The counterweight for this damper is removeable, so if you want to build a neutral balance engine, you can use this damper by simply removing the bolt-in counterweight on the back of the damper. See selection chart below to see if a spacer is required for your vehicle.
Part Specifications:
| Part Number |
Balance Style |
Outside Diameter |
RPM Rating |
Weight lbs. |
| 8030228 | 28.4 oz External (1) | 6.4" | 6500 | 9.52 |
Notes: (1) Coverts to internal balance style by removing the bolt-in counterweight.
Spacer Selection Chart:
| Engine Size | Model Year | Damper Length | Use Spacer# |
| 289/302/351W | 1963-1969 | 3.050" | No Spacer Required |
| 302/5.0L | 1970-1996 | 3.950" | Use 81007 Spacer |
| 351W | 1980-1996 | 3.950" | Use 81007 Spacer |
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