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S197 V6 Mustang Bolt On Test

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Just one pulley--the crank pulley--is underdriven on V-6 underdrive pulleykits. The one-piece pulley/harmonic damper assembly is exchanged withthe stock damper, along with a shorter serpentine drive belt. GTR sellsthe ASP Racing pulley/damper for 4.0-liter V-6s. ASP says this 25percent underdrive pulley provides charging voltage at only 850 rpm.
S197 V6 Mustang Bolt-On Test

 Just one pulley--the crank pulley--is underdriven on V-6 underdrive pulleykits. The one-piece pulley/harmonic damper assembly is exchanged withthe stock damper, along with a shorter serpentine drive belt. GTR sellsthe ASP Racing pulley/damper for 4.0-liter V-6s. ASP says this 25percent underdrive pulley provides charging voltage at only 850 rpm.  View Related Article

 

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