For the racer that is looking to set up an injected fuel pump belt drive this mandrel makes mounting a pulley to the dampner on a three bolt Chevy dampner a snap. Mandrel is machined for .187" keystock to allow the racer 2.250" of adjustment to move the acc. drive pulley on the mandrel to get proper belt alignment.
Mandrel has a male register on the backside to register in the harmonic dampner that measures 2.140" x .150". Mandrel length from backside mount surface to front is 3.225".
Mandrel is made from heat-treated steel that has been black oxide coated for corrosion protection.
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