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Moroso 63857 - Moroso Drive Mandrels

Moroso 63857 - Moroso Drive Mandrels

Moroso#710-63857

Drive Mandrel
  • Small Block Chevy
  • Vacuum Pump and Dry Sump/External Oil Pump
  • 3-Bolt, 3.20" Bolt Circle
  • 3.380" Length

    Moroso 63857 - Moroso Drive Mandrels Details

    Vacuum Pump/Oil Pump Drive Mandrels

    Includes:

  • One-piece forged steel mandrel
  • 4" V-belt pulley for Alternator
  • 2.5" V-belt pulley for Vacuum Pump
  • 1" Gilmer pulley for External Oil Pump
  • Guide plates, assorted spacers, belt guides and hardware

    Features:

  • Flange style bolts to harmonic balancer- Does not need to be drilled like older designs
  • Pulleys are 6061-T6 aluminum hard coat anodized and mandrel is black oxide for exceptional strength and extended service life
  • Centers off of I.D. of balancer via supplied crankbolt washer

    Note: For 1/4" thick crank trigger wheels, use 710-63861 Drive Mandrel Spacer

  • Moroso 63857 - Moroso Drive Mandrels

    These drive mandrels are specially engineered to ensure perfect belt alignment when driving a Moroso Dry Sump Pump, Alternator, or Racing Vacuum Pump either separately or together.

    Features:
  • Extra Long to Accommodate Any Combination
  • Pullys are 6061-T6 Aluminum for Extended Service Life
  • Self-centering Mandrell Bolts Directly to Harmonic Balancer for Dead Accurate Concentricity

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