Blower Special 302, 5.0, 351 SVO Ford 28oz Harmonic Damper

1/4"
3/16"
No Second Keyway

Fits 302, 5.0 & 351 SVO V8
Blower Special with 6-Bolt 2.80" Bolt Circle Pattern & 2" Register
The added side load created by driving most superchargers adds a great deal of stress to the harmonic damper and crank snout (pulling on the damper). A stock-dimension small block Ford harmonic damper can split in the keyways when driving a supercharger. We increase the O.D. of the harmonic damper where it passes through the oil seal, to provide a great improvement in strength for the damper and crankshaft in this highly-stressed area. Adding the 2.065" oil seal dimension to this damper is ideal to increase strength where it is needed most.
Requires Larger I.D. Oil Seal (Fits Stock Timing Cover; Options Below):
Timken 332134 (or National 332134); NAPA NOS 20520 (or SKF CR 20520)
Cleveland/SVO Timing Mark Location
External Balance
6.7" O.D.
3.2" Overall Length
10.7 lbs. Gross Weight
Billet Steel Construction
SFI 18.1 Certified
Dual Keyways Standard: Select either 1/4", 3/16", or No Second Keyway

Product 18/26

Custom Left Slide Out