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Alkydigger blown belt drive or Dry Sump crankshaft mandrel has the 6 hole blower pulley bolt pattern. With register .
With your choice of a 14, 16, 18 tooth pulley L pitch 1/2" Wide
1" diameter steel shaft supported by a billet aluminum housing.
1" diameter steel shaft supported by a billet aluminum housing.
Lightened Billet Base with Blower Bolt Pattern
Overall length = 5.20"
* If you are using a harmonic balancer with a non 6 bolt pattern, look at our Un-Blown mandrels - they are drilled for 3 -4- or 7 bolts.